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Worksheet: Force | Physics Class 10 ICSE PDF Download

A. Multiple Choice Questions

Q1. Which of the following is a non-contact force?
(a) Frictional force
(b) Magnetic force
(c) Tension force
(d) Normal reaction

Q2. The SI unit of force is:
(a) Dyne
(b) Kilogram
(c) Newton
(d) Joule

Q3. Which of these is always attractive in nature?
(a) Gravitational force
(b) Magnetic force
(c) Electrostatic force
(d) Frictional force

Q4. When you walk on the ground, which force prevents slipping?
(a) Tension
(b) Friction
(c) Magnetic
(d) Normal

Q5. Which law explains why a gun recoils when fired?
(a) Newton’s First Law
(b) Newton’s Second Law
(c) Newton’s Third Law
(d) Law of Gravitation

B. Short Answer Questions

Q6. Define friction. Give one daily life example.

Q7. Why does a body not fall through the floor even though Earth pulls it downward?

Q8. A ball of mass 2 kg moves with velocity 3 m/s. Find its momentum.

Q9. What is the difference between centripetal and centrifugal force?

Q10. Why is it easier to open a door by pushing at its handle than near its hinges?

C.  Long Answer Questions

Q11. Explain with examples how Newton’s First Law shows the role of inertia.

Q12.  A uniform beam is balanced on a pivot. A 10 N weight hangs 3 m to the left, and a 15 N weight hangs 2 m to the right. Is the beam balanced? Show with calculations.

Q13.  A force of 20 N acts on a body of mass 5 kg. Find its acceleration. If the force is doubled, what will be the new acceleration?


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FAQs on Worksheet: Force - Physics Class 10 ICSE

1. What is the definition of force in physics?
Ans. In physics, force is defined as any interaction that, when unopposed, will change the motion of an object. It is a vector quantity, which means it has both magnitude and direction. The standard unit of force is the Newton (N), which is defined as the force required to accelerate a 1 kg mass by 1 m/s².
2. What are the different types of forces?
Ans. There are several types of forces in physics, including: - Gravitational Force: The attractive force between two masses. - Electromagnetic Force: The force between charged particles. - Nuclear Force: The force that holds protons and neutrons together in an atomic nucleus. - Frictional Force: The force that opposes the motion of an object in contact with a surface. - Tension Force: The pulling force transmitted through a string or rope.
3. How is Newton's second law of motion related to force?
Ans. Newton's second law of motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. This can be expressed with the formula F = ma, where F is the net force, m is the mass of the object, and a is the acceleration. This law explains how the forces acting on an object influence its motion.
4. What is the difference between balanced and unbalanced forces?
Ans. Balanced forces occur when two or more forces acting on an object are equal in magnitude and opposite in direction, resulting in no change in the object's motion. Unbalanced forces, on the other hand, occur when the net force acting on an object is not zero, causing the object to accelerate or change its motion.
5. What is the significance of the concept of inertia in relation to force?
Ans. Inertia is the property of an object to resist changes in its state of motion. It is directly related to mass; the greater the mass of an object, the greater its inertia. According to Newton's first law of motion, an object will remain at rest or in uniform motion unless acted upon by an external force. This means that force is necessary to overcome inertia and change the motion of an object.
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