A body of mass $60\,kg$ is suspended by means of three strings $P, Q$ and $R$ as shown in the figure is in equilibrium. The tension in the string $P$ is $……….g\,N$

Define $SI$ unit of force $N$. Define $CGS$ unit of force dyne.

A man is pulling on a rope attached to a block on a smooth horizontal table. The tension in the rope will be the same at all points

For given systen $T_2$ …….