For the equilibrium of a body on an inclined plane of inclination $45^{\circ}$. The coefficient of static friction will be
less than one
$Zero$
less than zero
greater than one
A block of mass $m$, is kept on a wedge of mass $M$, as shown in figure such that mass $m$ remains stationary w.r.t. wedge. The magnitude of force $P$ is
In the arrangement shown in figure, pulley is smooth and massles and all the strings are light let $F_1$ be the force exerted on the pulley in case $(i)$ and $F_2$ the force in case $(ii)$. Then
Two masses $m_1 = 5\, kg$ and $m_2 = 4.8\, kg$ tied to a string are hanging over a light frictionless pulley. ............ $m/s^2$ is the acceleration of the masses when they are free to move . $(g = 9.8\, m/s^2)$
Which of the following is self-adjusting force?