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A person of mass 60 kg wants to lose 5kg...

A person of mass 60 kg wants to lose 5kg by going up and down a 10m high stairs. Assume he burns twice as much fat while going up then coming down. If 1 kg of fat is burnt on expending 7000 kilo calories, how many times must he go up and down to reduce his weight by 5 kg?

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Verified by Experts

` 5xx7000xx10^(3) xx4.2J = 60xx15xx10xxN`
`N=(21xx7xx10^(6))/9000 = 147/9xx10^(3) = 16.3xx10^(3)` times
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