state gov TSPSC Polytechnic Lecturer Mock Test 2022 Engineering Mechanics Equilibrium and Friction Friction
A cube rests on a rough horizontal surface and the coefficient of friction between the cube and the surface is µ. If the cube is gradually tilted from horizontal by tilting the plane on which it rests then the equilibrium is disturbed by sliding first if :
1
μ < \(\frac{1}{2}\)
2
μ > \(\frac{1}{2}\)
3
μ < 1
4
μ > 1