A `500kg` horse pulls a cart of mass `1500kg` along a level road with an acceleration of `1m//s^(2)`. if coefficient of sliding friction is `0.2` then force exerted by the earth on horse is .

A 500 kg horse pulls a cart of mass 1500 kg along a level road with an acceleration of 1ms^(-2) . ms . If the coefficient of sliding friction is 0.2, then the force exerted by the horse in forward direction is

Find the friction force due to air on a body of mass 1 kg falling with acceleration 8 m//s^(2) :-

The elevator shown in fig. is descending with an acceleration of 2 m//s^(2) . The mass of block A is 0.5 kg. The force exerted by the block A on the block B is

The work done in pulling a body of mass 5 kg along an inclined plane (angle 60^(@) ) with coefficient of friction 0.2 through 2 m, will be -

A heavy box having a mass of 300 kg is pulled along the floor for 10 m. If the coefficient of sliding friction is 0.2 , kilocalories of heat produced is

A steam engine of mass 3xx 10^4 kg pulls two wagons each of mass 2 xx10^4 kg with an acceleration of 0.2 ms ^(-2) . Neglecting frictional force, calculate the :force exerted by the engine.

A block of mass 2 kg is kept on a rough horizontal floor an pulled with a force F. If the coefficient of friction is 0.5. then the minimum force required to move the block is :-

A block of mass 2 kg is kept on a rough horizontal floor an pulled with a force F. If the coefficient of friction is 0.5. then the minimum force required to move the block is :-