Question

a person climbs a tower of height 72m .if the person weighs 30 kg and g = 9.8m/ s^-2 calculate work done .


solve this question

Answer 1

solution :-

given in question.

mass ( m) = 30 kg

height (h) = 72 m

$g = 9.8 {ms}^{ - 2}$

when the person climbing the tower work done against the gravity. since work done = potential energy .

work done = mass × gravity× height

then

w = 30× 9.8 × 72

w = 2160× 9.8

w = 21168j

be brainly

Answer 2

m=30kg
g=9.8m/s^2
f=mg
f=30*9.8
f=294N
so the work done by body
W=f*d
W=294*72
W=21168J
the work done by the body is 21168J