What is the concept of Work in NCERT Solutions for Class 11 Physics Chapter 5 Work, Energy and Power?

A uniform chain of length L and mass M is lying on a table and 1/4^th of its length is hanging vertically down over the edge of the table. If g is acceleration due to gravity, the work required to pull the hanging part back on the table

If a ball of mass 4 kg moving with velocity of 3 m/s collides elastically head on with another ball of mass 6 kg which is at rest, then the ratio of speed of second ball to first after collision will be

In stable equilibrium position, a body has

A particle moves along x axis from x = 1 m to x = 3 m under the effect of the force F = 3x² – 2x + 5 N. Work done in process is

A ball is projected vertically up with an initial velocity. Which of the following graph represent KE of ball?