How much work does a putting force of 40 N do on the 20 kg box in pulling it 8 m across the floor at a constant speed. The pulling force is directed at 60° above the horizontal

Across a horizontal floor, a 102 kg block is pulled at a constant speed of 5.5 m/s by an applied force of 125 N directed 38^(@) above the horizontal. Calculate the rate at which the force does work on the block.

A boy pulls 5 kg block by 20 m along a horizontal surface at constant speed with a force directed 45^(@) above the horizontal. If the coefficient of friction is 0.2, then

Using a force of 20N, a person pushes a shopping cart 8 m. How much work does the person do?

A boy pulls a 5 kg block 20 metres along a horizontal sur- face at a constant speed with a force directed 45° above the horizontal. If the coefficient of kinetic friction is 0.20, how much work does the boy do on the block?

A 10 kg body is suspended by a rope is pulled by means of a horizontal force to make 60° by rope to vertical. The horizontal force is

A 10 kg body is suspended by a rope is pulled by means of a horizontal force to make 60° by rope to vertical. The horizontal force is

A worker pushed a 23 kg block 8.4 m along a level floor at constant speed with a force directed 32^(@) below the horizontal . If the coefficient of kinetic friction between block and floor was 0.20, what were (a) the work done by the worker's force and (b) the increase in thermal energy of the block-floor system ?