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Page 1 Numerical Q.1. A block of mass 10 kg is moving along x-axis under the action of force F=5x N. The work done by the force in moving the block from x=2m to 4m will be __________ J. JEE Main 2023 (Online) 15th April Morning Shift Q.2. A car accelerates from rest to u m/s. The energy spent in this process is E J. The energy required to accelerate the car from u m/s to 2um/s is nE J. The value of n is ____________. JEE Main 2023 (Online) 13th April Evening Shift Q.3. To maintain a speed of 80 km/h by a bus of mass 500 kg on a plane rough road for 4 km distance, the work done by the engine of the bus will be ____________ KJ. [The coeffi cient of friction between tyre of bus and road is 0.04.] JEE Main 2023 (Online) 12th April Morning Shift Q.4. A block of mass 5 kg starting from rest pulled up on a smooth incline plane making an angle of 30 ° with horizontal with an affective acceleration of 1 ms-2. The power delivered by the pulling force at t=10 s from the start is ___________ W. [use g=10 ms-2 ] (calculate the nearest integer value) JEE Main 2023 (Online) 11th April Evening Shift Page 2 Numerical Q.1. A block of mass 10 kg is moving along x-axis under the action of force F=5x N. The work done by the force in moving the block from x=2m to 4m will be __________ J. JEE Main 2023 (Online) 15th April Morning Shift Q.2. A car accelerates from rest to u m/s. The energy spent in this process is E J. The energy required to accelerate the car from u m/s to 2um/s is nE J. The value of n is ____________. JEE Main 2023 (Online) 13th April Evening Shift Q.3. To maintain a speed of 80 km/h by a bus of mass 500 kg on a plane rough road for 4 km distance, the work done by the engine of the bus will be ____________ KJ. [The coeffi cient of friction between tyre of bus and road is 0.04.] JEE Main 2023 (Online) 12th April Morning Shift Q.4. A block of mass 5 kg starting from rest pulled up on a smooth incline plane making an angle of 30 ° with horizontal with an affective acceleration of 1 ms-2. The power delivered by the pulling force at t=10 s from the start is ___________ W. [use g=10 ms-2 ] (calculate the nearest integer value) JEE Main 2023 (Online) 11th April Evening Shift Q.6. If the maximum load carried by an elevator is 1400 kg ( 600 kg - Passengers + 800 kg - elevator), which is moving up with a uniform speed of 3 m s-1 and the frictional force acting on it is 2000 N, then the maximum power used by the motor is __________ JEE Main 2023 (Online) 10th April Evening Shift Q.7. A closed circular tube of average radius 15 cm, whose inner walls are rough, is kept in vertical plane. A block of mass 1 kg just fit inside the tube. The speed of block is 22 m/s, when it is introduced at the top of tube. After completing fi ve oscillations, the block stops at the bottom region of tube. The work done by the tube on the block is __________ J. (Given g = 10 m/s2). JEE Main 2023 (Online) 10th April Morning Shift Q.8. A body of mass 5 kg is moving with a momentum of 10 kg ms-1. Now a force of 2 N acts on the body in the direction of its motion for 5 s. The increase in the Kinetic energy of the body is ___________ J. JEE Main 2023 (Online) 8th April Evening Shift Q.9. A hollow spherical ball of uniform density rolls up a curved surface with an initial velocity 3 m/s (as shown in fig ure). Q.5. A force acts on a particle in the X direction where F is in newton and X is in meter. The work done by this force during a displacement from X=0 to X=4 m, is __________ J. JEE Main 2023 (Online) 11th April Morning Shift Page 3 Numerical Q.1. A block of mass 10 kg is moving along x-axis under the action of force F=5x N. The work done by the force in moving the block from x=2m to 4m will be __________ J. JEE Main 2023 (Online) 15th April Morning Shift Q.2. A car accelerates from rest to u m/s. The energy spent in this process is E J. The energy required to accelerate the car from u m/s to 2um/s is nE J. The value of n is ____________. JEE Main 2023 (Online) 13th April Evening Shift Q.3. To maintain a speed of 80 km/h by a bus of mass 500 kg on a plane rough road for 4 km distance, the work done by the engine of the bus will be ____________ KJ. [The coeffi cient of friction between tyre of bus and road is 0.04.] JEE Main 2023 (Online) 12th April Morning Shift Q.4. A block of mass 5 kg starting from rest pulled up on a smooth incline plane making an angle of 30 ° with horizontal with an affective acceleration of 1 ms-2. The power delivered by the pulling force at t=10 s from the start is ___________ W. [use g=10 ms-2 ] (calculate the nearest integer value) JEE Main 2023 (Online) 11th April Evening Shift Q.6. If the maximum load carried by an elevator is 1400 kg ( 600 kg - Passengers + 800 kg - elevator), which is moving up with a uniform speed of 3 m s-1 and the frictional force acting on it is 2000 N, then the maximum power used by the motor is __________ JEE Main 2023 (Online) 10th April Evening Shift Q.7. A closed circular tube of average radius 15 cm, whose inner walls are rough, is kept in vertical plane. A block of mass 1 kg just fit inside the tube. The speed of block is 22 m/s, when it is introduced at the top of tube. After completing fi ve oscillations, the block stops at the bottom region of tube. The work done by the tube on the block is __________ J. (Given g = 10 m/s2). JEE Main 2023 (Online) 10th April Morning Shift Q.8. A body of mass 5 kg is moving with a momentum of 10 kg ms-1. Now a force of 2 N acts on the body in the direction of its motion for 5 s. The increase in the Kinetic energy of the body is ___________ J. JEE Main 2023 (Online) 8th April Evening Shift Q.9. A hollow spherical ball of uniform density rolls up a curved surface with an initial velocity 3 m/s (as shown in fig ure). Q.5. A force acts on a particle in the X direction where F is in newton and X is in meter. The work done by this force during a displacement from X=0 to X=4 m, is __________ J. JEE Main 2023 (Online) 11th April Morning Shift Maximum height with respect to the initial position covered by it will be __________ cm. JEE Main 2023 (Online) 8th April Evening Shift Q.10. A body is dropped on ground from a height ' h1' and after hitting the ground, it rebounds to a height ' h2'. If the ratio of velocities of the body just before and after hitting ground is 4 , then percentage loss in kinetic energy of the body is X/4. The value of X is ____________. JEE Main 2023 (Online) 6th April Evening Shift Q.11. A particle of mass 10 g moves in a straight line with retardation 2X, where X is the displacement in SI units. Its loss of kinetic energy for above displacement is (10/X)-n J. The value of n will be __________ JEE Main 2023 (Online) 6th April Morning Shift Q.12. A block is fastened to a horizontal spring. The block is pulled to a distance x=10 cm from its equilibrium position (at x=0) on a frictionless surface from rest. The energy of the block at x=5 cm is 0.25 J. The spring constant of the spring is ___________ Nm -1 JEE Main 2023 (Online) 1st February Evening Shift Q.13. A force F=(5+3y 2 ) acts on a particle in the y-direction, where F is in newton and y is in meter. The work done by the Page 4 Numerical Q.1. A block of mass 10 kg is moving along x-axis under the action of force F=5x N. The work done by the force in moving the block from x=2m to 4m will be __________ J. JEE Main 2023 (Online) 15th April Morning Shift Q.2. A car accelerates from rest to u m/s. The energy spent in this process is E J. The energy required to accelerate the car from u m/s to 2um/s is nE J. The value of n is ____________. JEE Main 2023 (Online) 13th April Evening Shift Q.3. To maintain a speed of 80 km/h by a bus of mass 500 kg on a plane rough road for 4 km distance, the work done by the engine of the bus will be ____________ KJ. [The coeffi cient of friction between tyre of bus and road is 0.04.] JEE Main 2023 (Online) 12th April Morning Shift Q.4. A block of mass 5 kg starting from rest pulled up on a smooth incline plane making an angle of 30 ° with horizontal with an affective acceleration of 1 ms-2. The power delivered by the pulling force at t=10 s from the start is ___________ W. [use g=10 ms-2 ] (calculate the nearest integer value) JEE Main 2023 (Online) 11th April Evening Shift Q.6. If the maximum load carried by an elevator is 1400 kg ( 600 kg - Passengers + 800 kg - elevator), which is moving up with a uniform speed of 3 m s-1 and the frictional force acting on it is 2000 N, then the maximum power used by the motor is __________ JEE Main 2023 (Online) 10th April Evening Shift Q.7. A closed circular tube of average radius 15 cm, whose inner walls are rough, is kept in vertical plane. A block of mass 1 kg just fit inside the tube. The speed of block is 22 m/s, when it is introduced at the top of tube. After completing fi ve oscillations, the block stops at the bottom region of tube. The work done by the tube on the block is __________ J. (Given g = 10 m/s2). JEE Main 2023 (Online) 10th April Morning Shift Q.8. A body of mass 5 kg is moving with a momentum of 10 kg ms-1. Now a force of 2 N acts on the body in the direction of its motion for 5 s. The increase in the Kinetic energy of the body is ___________ J. JEE Main 2023 (Online) 8th April Evening Shift Q.9. A hollow spherical ball of uniform density rolls up a curved surface with an initial velocity 3 m/s (as shown in fig ure). Q.5. A force acts on a particle in the X direction where F is in newton and X is in meter. The work done by this force during a displacement from X=0 to X=4 m, is __________ J. JEE Main 2023 (Online) 11th April Morning Shift Maximum height with respect to the initial position covered by it will be __________ cm. JEE Main 2023 (Online) 8th April Evening Shift Q.10. A body is dropped on ground from a height ' h1' and after hitting the ground, it rebounds to a height ' h2'. If the ratio of velocities of the body just before and after hitting ground is 4 , then percentage loss in kinetic energy of the body is X/4. The value of X is ____________. JEE Main 2023 (Online) 6th April Evening Shift Q.11. A particle of mass 10 g moves in a straight line with retardation 2X, where X is the displacement in SI units. Its loss of kinetic energy for above displacement is (10/X)-n J. The value of n will be __________ JEE Main 2023 (Online) 6th April Morning Shift Q.12. A block is fastened to a horizontal spring. The block is pulled to a distance x=10 cm from its equilibrium position (at x=0) on a frictionless surface from rest. The energy of the block at x=5 cm is 0.25 J. The spring constant of the spring is ___________ Nm -1 JEE Main 2023 (Online) 1st February Evening Shift Q.13. A force F=(5+3y 2 ) acts on a particle in the y-direction, where F is in newton and y is in meter. The work done by the force during a displacement from y=2 m to y=5 m is ___________ J. JEE Main 2023 (Online) 1st February Evening Shift Q.14. A small particle moves to position from its initial position under the action of force . The value of work done will be __________ J. JEE Main 2023 (Online) 1st February Morning Shift Q.15. A lift of mass M=500 kg is descending with speed of 2 ms-1. Its supporting cable begins to slip thus allowing it to fall with a constant acceleration of 2 ms-2. The kinetic energy of the lift at the end of fall through to a distance of 6 m will be _____________ kJ. JEE Main 2023 (Online) 31st January Morning Shift Q.16. A body of mass 2 kg is initially at rest. It starts moving unidirectionally under the influence of a source of constant power P . Its displacement in . The value of a will be ______. JEE Main 2023 (Online) 30th January Evening Shift Q.17. A 0.4 kg mass takes 8s to reach ground when dropped from a certain height 'P' above surface of earth. The loss of potential energy in the last second of fall is __________ J. (Take g = 10 m/s2) JEE Main 2023 (Online) 29th January Morning Shift Q.18. An object of mass 'm' initially at rest on a smooth horizontal plane starts moving under the action of force F = 2N. In the process of its linear motion, the angle ? (as shown in figure) between the direction of force and horizontal varies Page 5 Numerical Q.1. A block of mass 10 kg is moving along x-axis under the action of force F=5x N. The work done by the force in moving the block from x=2m to 4m will be __________ J. JEE Main 2023 (Online) 15th April Morning Shift Q.2. A car accelerates from rest to u m/s. The energy spent in this process is E J. The energy required to accelerate the car from u m/s to 2um/s is nE J. The value of n is ____________. JEE Main 2023 (Online) 13th April Evening Shift Q.3. To maintain a speed of 80 km/h by a bus of mass 500 kg on a plane rough road for 4 km distance, the work done by the engine of the bus will be ____________ KJ. [The coeffi cient of friction between tyre of bus and road is 0.04.] JEE Main 2023 (Online) 12th April Morning Shift Q.4. A block of mass 5 kg starting from rest pulled up on a smooth incline plane making an angle of 30 ° with horizontal with an affective acceleration of 1 ms-2. The power delivered by the pulling force at t=10 s from the start is ___________ W. [use g=10 ms-2 ] (calculate the nearest integer value) JEE Main 2023 (Online) 11th April Evening Shift Q.6. If the maximum load carried by an elevator is 1400 kg ( 600 kg - Passengers + 800 kg - elevator), which is moving up with a uniform speed of 3 m s-1 and the frictional force acting on it is 2000 N, then the maximum power used by the motor is __________ JEE Main 2023 (Online) 10th April Evening Shift Q.7. A closed circular tube of average radius 15 cm, whose inner walls are rough, is kept in vertical plane. A block of mass 1 kg just fit inside the tube. The speed of block is 22 m/s, when it is introduced at the top of tube. After completing fi ve oscillations, the block stops at the bottom region of tube. The work done by the tube on the block is __________ J. (Given g = 10 m/s2). JEE Main 2023 (Online) 10th April Morning Shift Q.8. A body of mass 5 kg is moving with a momentum of 10 kg ms-1. Now a force of 2 N acts on the body in the direction of its motion for 5 s. The increase in the Kinetic energy of the body is ___________ J. JEE Main 2023 (Online) 8th April Evening Shift Q.9. A hollow spherical ball of uniform density rolls up a curved surface with an initial velocity 3 m/s (as shown in fig ure). Q.5. A force acts on a particle in the X direction where F is in newton and X is in meter. The work done by this force during a displacement from X=0 to X=4 m, is __________ J. JEE Main 2023 (Online) 11th April Morning Shift Maximum height with respect to the initial position covered by it will be __________ cm. JEE Main 2023 (Online) 8th April Evening Shift Q.10. A body is dropped on ground from a height ' h1' and after hitting the ground, it rebounds to a height ' h2'. If the ratio of velocities of the body just before and after hitting ground is 4 , then percentage loss in kinetic energy of the body is X/4. The value of X is ____________. JEE Main 2023 (Online) 6th April Evening Shift Q.11. A particle of mass 10 g moves in a straight line with retardation 2X, where X is the displacement in SI units. Its loss of kinetic energy for above displacement is (10/X)-n J. The value of n will be __________ JEE Main 2023 (Online) 6th April Morning Shift Q.12. A block is fastened to a horizontal spring. The block is pulled to a distance x=10 cm from its equilibrium position (at x=0) on a frictionless surface from rest. The energy of the block at x=5 cm is 0.25 J. The spring constant of the spring is ___________ Nm -1 JEE Main 2023 (Online) 1st February Evening Shift Q.13. A force F=(5+3y 2 ) acts on a particle in the y-direction, where F is in newton and y is in meter. The work done by the force during a displacement from y=2 m to y=5 m is ___________ J. JEE Main 2023 (Online) 1st February Evening Shift Q.14. A small particle moves to position from its initial position under the action of force . The value of work done will be __________ J. JEE Main 2023 (Online) 1st February Morning Shift Q.15. A lift of mass M=500 kg is descending with speed of 2 ms-1. Its supporting cable begins to slip thus allowing it to fall with a constant acceleration of 2 ms-2. The kinetic energy of the lift at the end of fall through to a distance of 6 m will be _____________ kJ. JEE Main 2023 (Online) 31st January Morning Shift Q.16. A body of mass 2 kg is initially at rest. It starts moving unidirectionally under the influence of a source of constant power P . Its displacement in . The value of a will be ______. JEE Main 2023 (Online) 30th January Evening Shift Q.17. A 0.4 kg mass takes 8s to reach ground when dropped from a certain height 'P' above surface of earth. The loss of potential energy in the last second of fall is __________ J. (Take g = 10 m/s2) JEE Main 2023 (Online) 29th January Morning Shift Q.18. An object of mass 'm' initially at rest on a smooth horizontal plane starts moving under the action of force F = 2N. In the process of its linear motion, the angle ? (as shown in figure) between the direction of force and horizontal varies as ?=kx, where k is a constant and x is the distance covered by the object from its initial position. The expression of kinetic energy of the object will be . The value of n is JEE Main 2023 (Online) 25th January Morning Shift Q.19. A body of mass 1kg begins to move under the action of a time dependent force N, where i^ and j^ are the unit vectors along x and y axis. The power developed by above force, at the time t = 2s, will be ____________ W. JEE Main 2023 (Online) 24th January Evening Shift Q.20. A spherical body of mass 2 kg starting from rest acquires a kinetic energy of 10000 J at the end of 5th second. The force acted on the body is ________ N. JEE Main 2023 (Online) 24th January Morning ShiftRead More
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1. How to calculate work done by a force? |
2. What is the difference between work and power? |
3. How is kinetic energy related to work and power? |
4. Can you explain the concept of potential energy in relation to work and power? |
5. How does the conservation of energy principle apply to work, energy, and power? |
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