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zhuklara [117]
3 years ago
12

you go rock climbing with a pack that weighs 70 N and you reach a height of 30 m . How much work did you do to lift your pack ?

If you finished the climb in 10 minutes ( 600) what was your power?
Social Studies
1 answer:
Veronika [31]3 years ago
3 0

Answer:

Explanation:

When you climb, earth exerts gravitational force on pack in downward direction(pointing towards the center of earth).In order to climb, you need to work against work done by gravity on the pack.Hence work done by you = work done by gravity on pack                                         = Force x displacement = 70 x 30 = 2100 J. So you need to do 2100 joules of work to lift your pack.Power is the rate of work done.Therefore power = work done by you/time(in seconds)                            =     2100/600 =3.5 watts

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