Question

A student who weighs 560 N climbs a stairway (vertical height of 2.7 m) in 27 s. (a) how much work is done?

(b) what is the power output of the student?

Answer 1

Step-by-step explanation:

It is given that,

Force acting on the student, F = 560 N

Vertical height, h = 2.7 m

Time taken, t = 27 s

(a) Work done, W = F × h

`W=560\ N* 2.7\ m`

W = 1512 Joules

(b) The power output of the student is given by :

`P=(W)/(t)`

`P=(1512\ J)/(2.7\ s)`

P = 560 watts

Hence, this is the required solution.