Calculate the potential energy of a body of mass 50 kg raised to a height of 4 m above the ground Open Answer »

How much kilogram weight will a man working at the power of 100 W be able to rise at a constant speed of 1 m/s vertically? Open Answer »

A moving body of mass 10 kg has 20 Joules of kinetic energy. Calculate the speed of the body Open Answer »

A bag of wheat weighs 75 kg. Calculate the height to which it should be raised so that its potential energy is 7350 J. Open Answer »

A force of 10 N-acting on a body at an angle of 30° with the horizontal direction displaces it horizontally through a distance of 6 m. Calculate the work done Open Answer »

A car of weight 20000 N drives up a hill at a steady speed of 8 m/s, gaining a height of 120 m in 100 s Open Answer »

A man of mass 50 kg ascends 30 steps of a staircase in 15 seconds. If the height of each step of the staircase is 20 cm, find the power of the man Open Answer »

Applying a force of 20 N a body is moved through 10 m in the direction of the force. Find the amount of work done. Open Answer »