Which of the following sets of concurrent forces may be in equilibrium
${F_1} = 3N,\,\,{F_2} = 5N,\,\,{F_3} = 9N$
${F_1} = 3N,\,\,{F_2} = 5N,\,\,{F_3} = 1N$
${F_1} = 3N,\,{F_2} = 5N,\,{F_3} = 15N$
${F_1} = 3N,\,\,{F_2} = 5N,\,\,{F_3} = 6N$
At the instant $t = 0$ a force $F = kt$ ( $k$ is a constant) acts on a small body of mass $m$ resting on a smooth horizontal surface. The time, when body leaves the surface is
A rope of length $5\,m$ is kept on frictionless surface and a force of $5\,N$ is applied to one of its end. Find tension in the rope at $1\,m $ from this end ......... $N$
A boy is hanging from branch of a tree as shown. Angle between his arm, for tension to be maximum in arms must be ............ $^o$
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
Write different type of common forces.