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?
$\sqrt{2} N , 45^{\circ}$
$\sqrt{2} N , 135^{\circ}$
$\frac{2}{\sqrt{3}} N , 30^{\circ}$
$2 N , 45^{\circ}$
Which of the following groups of forces could be in equibrium
Out of contact force and field force which force is conservative and which force is nonconservative ?
A weight can be hung in any of following four ways by using same string. In which case is the string more likely to break is :-
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
A body of weight $2\, kg$ is suspended as shown in the figure. The tension ${T_1}$ in the horizontal string (in kg wt) is