When milk is churned, cream gets seperated due to

The mass of a lift is 2000 kg. When the tension in the cable is 28000 N, then its acceleration is

The force on a rocket moving with a velocity of 300 m/s is 210 N. Then the rate of combustion of the fuel will be

A force of 100N need to be applied parallel to a smooth inclined plane just to hold a body on it. The angle of inclination of the inclined plane is 300. How much horizontal force need to be applied to do the same?

 An army vehicle of mass 1000 kg is moving with a velocity of 10 m/s and is acted up or by a forward force of 1000N due to the engine and a retarding force of 500N due to friction. The velocity of it after 10 second is

Two iron blocks of equal masses but with double surface area slide down an inclined plane with friction coefficient μ. If the first block with surface area A experiences a friction force f, then the second block with surface area 2 A will experience a frictional force

A rope of mass 0.1 kg is connected at the same height of two opposite walls. It is allowed to hang under its own weight. At the contact point between the rope and the wall, the rope makes an angle θ = 10⁰ with respect to horizontal. The tension in the rope at its midpoint between the wall is

A body of mass M hits normally on a rigid wall with velocity V and bounces back with the same velocity. The impulse experienced by the body is

A truck and a car are moving with equal velocity. On applying brakes, both will stop after certain distance, then

A monkey is descending from the branch of a tree with constant acceleration. If the breaking strength is 75% of the weight of the monkey, the minimum acceleration with which monkey can slide down without breaking branch is