Answers

2014-11-16T10:31:29+05:30
This is because his entire body weight is maintained on his legs... By doing this for a long time, the muscles get strained...Hence all the energy is consumed and he gets tired
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  • Brainly User
2014-11-16T12:39:45+05:30
As there is one force acting on its body which wants him to sit down and that is gravitational force which is mass times gravity means mg
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