How much work is done?

Question

A box with a mass of 10kg being pulled by the force of gravity at 10 m/sec² is lifted upward 10 meters.

Answer 1

Use the definition of work...

Work is the energy transferred when an object is moved over a distance d by an external force F in the direction of motion.

W = F x d

In this case, the external force on the mass is due to gravity.

F = Mg = 10*10 N

You can easily calculate W with the formula above

W = 1000J