A smooth cylinder of mass $m$ and radius $R$ is resting on two corner edges $A$ and $B$ as shown in fig. The relation between normal reaction at the edges $A$ and $B$ is
${N_A} = \sqrt 2 {N_B}$
${N_B} = \frac{{2\sqrt 3 {N_A}}}{5}$
${N_A} = \frac{{{N_B}}}{2}$
${N_B} = \sqrt 3 {N_A}$
Which of the following is self-adjusting force?
A weight can be hung in any of the following four ways by string of same type. In which case is the string most likely to break?
A block of mass $m$ is released on a smooth inclined plarie of inclination $\theta$ with the horizontal. The force exerted by the plane on the block has a magnitude
Two masses of $5\, kg$ and $10\, kg$ are connected to a pulley as shown. What will be the acceleration if the pulley is set free ($g =$ acceleration due to gravity)
A block placed on a rough inclined plane of inclination $\left(\theta=30^{\circ}\right)$ can just be pushed upwards by applying a force " $F$ " as shown. If the angle of inclination of the inclined plane is increased to $\left(\theta=60^{\circ}\right)$, the same block can just be prevented from sliding down by application of a force of same magnitude. The coefficient of friction between the block and the inclined plane is