Question Library

which of the diagrams above shows the position at which a small ball-bearing is in neutral equilibrium?

I. All the three forces must be concurrent. II. The upward force is equal to the downward force. III. The algebraic sum of the moment about any point must be zero. which of the above conditions must hold for a body acted upon by a system of three coplanar forces equilibrium?

The diagram above shows a plank RS pivoted its center of gravity O and is in equilibrium with the weight P and Q. If a weight 2P is added to P the plank will be in equilibrium again by?

A uniform meter rule weighing 0.5N is to be pivoted on a knife-edge at the 30cm-mark. where will a force of 2N be placed from the pivot to balance the meter rule?

the fig above shows three different ways of hanging a heavy picture from a hook. the tension in the string will be?

the fig above shows two connected bodies of masses M\(_1\) and M\(_2\) in equilibrium under gravity. The tension in the upper string is

fig 10 shows a see-saw which is perfectly in balance, the weighs of the people sitting on it are 50kg, xkg and 15kg as shown, the sit at distances of 1.5, 1.5 and 2m from the pivot respectively. The vale of X is