To be rescued from the roof of a burning building, a62-kg man must be able to...

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Physics

To be rescued from the roof of a burning building, a62-kg manmust be able to jump straight up and catch hold of a rope ladderhanging from a helicopter. He has to raise his center of mass2.00 mabove the roof to do so.
If he crouches down such that his center of mass is 0.50 m abovethe roof and his feet leave the roof when his center of mass is1.05 m above the roof, what minimum force must he exert on the roofto reach the ladder?
A typical candy bar contains about Ecandy = 900 kJ offood energy. How many candy bars does this jump require?

Answer & Explanation Solved by verified expert

4.4 Ratings (596 Votes)

HelloWell first were going to raise the exercise so that we canresolve it with work and energy at least the first partIt is a leap we can consider the followingwill be mechanical energy all the way so we use the formula thatexpresses the relation between work and energywhere isDelta See Answer

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