NEET | 2013Work, Power and EnergyHard
Question
Two pith balls carrying equal charges are suspended from a common point by strings of equal length, the equilibrium separation between them is r. Now the strings are rigidly clamped at half the height. The equilibrium separation between the balls now become : 
Options
A.
B.
C.
D.
More Work, Power and Energy Questions
A ball after falling from a height of 10m strikes the roof of a lift which is descending down with a velocity of 1 m/s. ...A mass of 20 kg moving with a speed of 10 m/s collides with another stationary mass of 5 kg. As a result of the collisio...An athlete in the olympic games covers a distance of 100 m in 10 s. His kinetic energy can be estimated to be in the ran...An ideal monoatomic gas is confined in a horizontal cylinder by a spring loaded piston (as shownin the figure). Initiall...A particle of mass m moving with velocity v collides with a stationary particle of mass2m. Then the speed of the speed o...