CBSE Class 11science  Conservative Forces Videos
Work, Energy and Power
This video explains nonconservative forces, work done by them and the relationship between conservative force and potential energy function.

plz elaborate by figure and step by step 1 no. ka question
 What are conservative and nonconservative forces. Give one example of each force.
 Why a coolie does no work when he moves on a level road while carrying a box on his head?
 Write four properties of conservative forces.
 Explain that gravitational force is a conservative force.
 Calculate the velocity of the bob of simple pendulum at its mean position if it is able to rise to vertical height of 20 cm. Take g = 9.8 m/s^{2}.
 Find the maximum compression in a spring of spring constant 800 N/m, if it is hit by a ball of 0.5 kg released from the height of 10 m. The ball initially followed a curved path and then move horizontally on a frictionless surface to meet the target.
 A ball at rest is dropped from a height of 10 m. It loses 25% of its kinetic energy in striking the ground. Find the height to which it bounces. Give the reason of loss of kinetic energy.
 A ball of mass 0.1 kg is thrown vertically up with a velocity of 10 m/s. At what height, will its kinetic energy be half its original value?
 250 joules were spent in lifting a 10 kg weight to a height of 2 m. Calculate the acceleration with which it was raised. (Take g = 10 m/s^{2})