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A person (40 kg) is managing to be at re...

A person (40 kg) is managing to be at rest between two verticle walls by pressing one wall A by his hands and feet and the other wall B by his back figure. Assume that the friction coefficient between his body and the walls is 0.8 and that limiting friction acts at all the contacts. (a). show that the person pushes the two walls with equal force. (b). find the normal force exerted by either wall on the person Take `g=10 m/s^2`.

Text Solution

Verified by Experts

Since, man is at rest

`N_(1)-N_(2)=0`
`therefore N_(1) = N_(2) = N` (say)
`therefore 2mu N = mg`
`=2 xx 0.8 xx N = 400`
`therefore N = 250 N`
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