Question

How much work does it take to raise a `6 kg` weight `20 m`?

Answer 1

1176 Joules

Explanation:

Work done on a weight in moving it up against gravity is given by

`m*g*h` where `m` is mass in kg., `g` is acceleration due to gravity which is 9.8 meters / `second^2` and `h` is height in meters.

So work done in this case is `6*9.8*20` i.e. 1176 Joules.