Question

A 66.0 kg person climbs stairs, gaining 3.70 meters in height. Find the work done (in J) to accomplish this task?

Answer 1

I got: `2393J`

Explanation:

He is doing work against gravity and at the end he will "gain" a potential energy equal to `mgh` that he will need to input through work (...energy conversion through his muscles, perhaps).
So:
`W=mgh=66*9.8*3.7=2393J`