Question

Calculate work done by a man of mass 60kg who climbs up a stair consisting of 15 step.Given of each steps is 30cm.

Answer 1

By the definition of the work we have:

$$W=Fh=mgh=60\ kg\cdot 9.8\ \dfrac{m}{s^2}\cdot 0.3\ m\cdot 15=2646\ J.$$

Answer:

$W=2646\ J.$