Question

What friction will be applicable when a person is rest between two vertical walls​

Answer 1

A person (40 kg) is managing to be at rest between two vertical walls by pressing one 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=101m/s  

2