Q. 82 A block of mass $m=10 \mathrm{~kg}$ is lying on an inclined plane $\mathrm{PQ}$. The mass is
restrained from sliding down the inclined plane by a force $F$. The coefficient of
friction between the block and the inclined plane is 0.3 . Take the acceleration due
to gravity as $10 \mathrm{~m} / \mathrm{s}^{2}$. The smallest force $F$ (in $\mathrm{N}$ ) required to prevent the block
from sliding down is__rounded off to one decimal place).
