Question

You hold a metal block of mass 40 kg above your head at a height of 2m. How much work is done by gravity of you let the block fall to the ground?

Answer 1

Step-by-step explanation:

The work done by gravity can be calculated using the formula: W = mgh, where m is the mass of the block (40 kg), g is the acceleration due to gravity (9.8 m/s^2), and h is the height the block falls from (2 m).

So, W = 40 kg * 9.8 m/s^2 * 2 m = 784 J.

Therefore, 784 J of work is done by gravity if you let the block fall to the ground from a height of 2 m.