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
${N_A}\, = \,\sqrt 2 {N_B}$
${N_B}\, = \,\frac{{2\sqrt 3 {N_A}}}{5}$
${N_A}\, = \,\frac{{{N_B}}}{2}$
${N_B}\, = \,\sqrt 3 {N_A}$
Define force. What is contact force ? Write two example of field force.
A body of mass $m_1$ exerts a force on another body of mass $m_2$. If the magnitude of acceleration of $m_2$ is $a_2$, then the magnitude of the acceleration of $m_1$ is (considering only two bodies in space)
A boy is hanging from branch of a tree as shown. Angle between his arm, for tension to be maximum in arms must be ............ $^o$
Which force act on body first action or reaction ?
Write condition of translational equilibrium of particle.