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You go rock climbing with a pack that ways 79 N and you reach a height of 30 m. How much work did you do to lift your pack? If you finish the climb in 10 minutes 600 seconds what was your power

You go rock climbing with a pack that ways 79 N and you reach a height of 30 m How much work did you do to lift your pack If you finish the climb in 10 minutes class=

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victoriaporter9
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.
 

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