Physics

Problem

2.0\,\text{kg}

block is placed on a rough incline that makes an angle of

30^{\circ}

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

0.15

. A force

P

is applied parallel to the plane and directed up the slope just sufficient to keep the block at rest. Find the magnitude of

P

. (Take

g = 9.8\,\text{m\,s}^{-2}