Question

A 2 kg block is lifted vertically 2 m by a man What is work done by the man?

Answer 1

Work done, W = 39.2 J

Step-by-step explanation:

It is given that,

Mass of the block, m = 2 kg

The block is lifted vertically 2 m by the man i.e the distance covered by the block is, h = 2 m. The man is doing work against the gravity. It is given by :

`W=mgh`

Where

g is acceleration due to gravity

`W=2\ kg* 9.8\ m/s^2* 2\ m`

W = 39.2 J

So, the work done by the man is 39.2 J. Hence, this is the required solution.