Question

A student wishes to work out how much power she uses to lift her body when climbing a
flight of stairs
Her body mass is 60kg and the vertical height of the stairs is 3.0m. She takes 12s to walk
up the stairs.
(a) Calculate
the work done in raising her body mass as she climbs the stairs,
work =

Answer 1

Answer

i'm not 100% sure but 1764

Explanation:

Work done = gravitational potential energy

Gravitational potential energy = mass(kg) × height(m) × gravitational field strength(N/kg)

We can assume that the student is on earth so the gravitational field strength is 9.8N/kg

So work done = 60 × 3×9.8

=1764

(if you need help calculating power but if you do just divide your answer by 12 and you will get 147)