Question

A student weighs 530 N. The walk to the top of a 3m staircase. It takes them 5 seconds. How

much work did they do?
*

Answer 1

The work will be 1590 J

since the formula is W = F x D so I cancel the time

Step-by-step explanation:

Given:

(Force) F = 530N

(Distance)D = 3m

Unknown:

W or Work

Formula and Solution:

W = F x D

W = (530N) (3m)

Final Answer:

W = 1 590 N·m or simplify as 1590 J

Answer 2

W = 1590 J

Step-by-step explanation:

We could use the formula of potential energy to find work as both have the same units,

W = mgh

since weight = mg so,

Work = weight x height

= 530 x 3

= 1590 J