A block rests on a rough inclined plane making an angle of with the horizontal

PHYSICS · Single correct · CBSE · Physics · Laws of Motion · Laws of Motion

Problem

A block rests on a rough inclined plane making an angle of

30^\circ

with the horizontal. The coefficient of static friction between the block and the inclined plane is

0.8

. If the frictional force on the block is

10\,\text{N}

, the mass of the block in kg is, given

g=10\,\text{m/s}^2

, (1) 2.0 (2) 4.0 (3) 1.6 (4) 2.5