Question

A box of mass 8 kg is placed on a rough inclined plane on inclination theta. its downwrd motion can be prevented by applying an upwrd pullf. and it can be mde to slide ipwrds by applying a force 2f . the coffecient of friction between the box and inclind plane is

Answer 1

Given m = 8kg

We know that F = mg * (coefficient of friction)

F1 + F2 = Fg

3 * m * g µcosθ = m * g * sinθ

(1/3)tanθ = µ