Question

How many joules of work are done when a 20 newton box is lifted 5 meters of the floor?

Answer 1

`100\ \text{joules}`

Explanation:

Work done on the block of weight `W=20\ N` when lifted at a height `H=5\ m` is

`=\text{Force}\times \text{Displacement in the direction of force}`

`=WH`

`=20\cdot 5`

`=100\ \text [Joules`