(Answered) To be rescued from the roof of a burning building a 82-kg

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To be rescued from the roof of a burning building, a 82-kg man must be able to jump straight up and catch hold of a rope ladder hanging from a helicopter. He has to raise his center of mass 2.00 m above the roof to do so.

Part A

If he crouches down such that his center of mass is 0.50 m above the roof and his feet leave the roof when his center of mass is 1.05 m above the roof, what minimum force must he exert on the roof to reach the ladder?
Express your answer with the appropriate units.

F =802.7N Incorrect

Part B: A typical candy bar contains about Ecandy = 800 kJ of food energy. How many candy bars does this jump require?

EjumpEcandy = 1.45*10^-3

Incorrect

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