For a free body diagram shown in the figure, the four forces are applied in the ' $x$ ' and ' $y$ ' directions. What additional force must be applied and at what angle with positive $x$-axis so that the net acceleration of body is zero?
$\sqrt{2} N , 45^{\circ}$
$\sqrt{2} N , 135^{\circ}$
$\frac{2}{\sqrt{3}} N , 30^{\circ}$
$2 N , 45^{\circ}$
A body of mass $5\,kg$ is suspended by a spring balance on an inclined plane as shown in figure. (in $N$)
The restoring force of a spring with a block attached to the free end of the spring is represented by
In the figure, blocks $A$ and $B$ of masses $2m$ and $m$ are connected with a string and system is hanged vertically with the help of a spring. Spring has negligible mass. Find out magnitude of acceleration of masses $2m$ and $m$ just after the instant when the string is cut
Explain main type of force with suitable example.
Write different type of common forces.