Question

Patrick weighs 375 N. He climbs a flight of stairs to a height of 4 m. It takes him 3 seconds.

How much work does Patrick do when he climbs the stairs?

A.125 J

B.1500 J

C.1125 J

D.94 J

Answer 1

You can do this several ways. Work done will equal the change in potential energy at the top. \[ \color{green}{\begin{align*}\text{E}_p &= mgh \\&= \text{F}_g \times d \\ &=375 ~\text{N} \times 4~\text{m} \end{align*}}\]

Answer 2

the answer is 1500. at least thats what i think it is. Thank you, though!!!