Science, asked by zeenatara468, 5 months ago

A man whose mass is 50kg after height his weight is 25kg

Answers

Answered by shivdharmendragautam
1

Explanation:

Given that ,

A man whose mass is 50kg climbs up 30 steps of a stair in 30s

each step is 20 cm high

Height at 30 steps , h=30×0.2=6 m

Change in potential energy , =mgh=50×10×6=3000 J

So, Work done by the man , W=3000 J

Power used , P=

t

W

=

30

3000

=100 W

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