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On a ladder resting on a smooth ground and leaning against vertical wall, the force of friction will be:
A body moves with a speed of 10 m/s in the curved path of 25 m radius of curvature. If the tangential acceleration is 3 m/s^{2}, then total acceleration for the body will be:
A person who weighs 800 N steps onto a scale that is on the floor of an elevator car. If the elevator accelerates upward at a rate of 5 m/s^{2}, what will the scale read?
Two forces of 30 N and 40 N are acting at 90° to each other, the resultant force is
A fan consumes 20 W of electric power and discharges air from a ventilated room at 0.25 kg/s. The maximum air outlet velocity is nearly
Which of the following forces have zero value of resultant?
A man stands on weighing scale in a lift which carries him upwards with acceleration. The reading on the weighing scale will be
An elevator weighing 1000 kg attains an upward velocity of 4 m/sec in two seconds with uniform acceleration. The tension in the supporting cables will be:
A barge is pulled by two tugboats as shown in the figure below. The resultant of forces exerted by the tugboats is 1000 kg force. What will be the value of θ so that tension in rope 2 is minimum?
The Force applied on a body of mass 100 kg to produce an acceleration of 5 m/s^{2}, is
A rubber ball is dropped from a height of 2 m. If there is not loss of velocity after rebounding the ball will rise to a height of
A 50  kg box rests on horizontal floor for which coefficient of friction is 0.3. If the box is subjected to a horizontal towing force of 400 N, what is its velocity after 5 sec from rest? (Take g = 10 m/s^{2})
A cannonball is fired from a tower 80 m above the ground with a horizontal velocity of 100 m/s. Determine the horizontal distance at which the ball will hit the ground. (Take g = 10 m/s^{2})
A bucket of water weighing 10 kg is pulled up from a 20 m deep well by a rope weighing 1 kg/m length, then the work done is _____.
The sum of kinetic and potential energy of a falling body _____.
If v_{1} and v_{2} are the initial velocities of two bodies making direct collision and if u_{1} and u_{2} are their respective velocities after collision then the coefficient of restitution is given by:
The position of a particle in rectilinear motion is given by the equation (x = t^{3}  2t^{2} + 10t  4), where x is in meters and t is in seconds. What will be the velocity of the particle at 3s?
The angular velocity (in radians /sec) of a body rotating at N rpm is:
For maximum horizontal range, the angle of projection of a projectile should be
6 videos97 docs57 tests

6 videos97 docs57 tests
