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A person trying to lose weight by burning fat lifts a mass of `10 kg` upto a height of `1m is 1000` time . Assume that the potential energy lost each time be lower the mass is dissipated . How much far will be use up considering the work done only when the weight is lifted up ? Far supplies `3.8 xx 10^(7) J` of energy per kg wich is canverted to mechanical energy with `x 20 %` efficiency rate Take ` = 9.8 ms^(-2)`

A

`6.75xx10^(-3)"kg"`

B

`9.89xx10^(-3)"kg"`

C

`12.89xx10^(-3)"kg"`

D

`2.45xx10^(-3)" kg"`

Text Solution

Verified by Experts

The correct Answer is:
C
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