2019-03-01_Physics_Times

(^12)
2
Uf kx

9. Elastic Potential Energy stored in a Spring

10. Work-Energy theorem

Work done by all forces acting on a body is equal to change in its kinetic energy.

2 2

1 1

2 2

 W mv  mu

When it is applied to a system of two or more particles change in the kinetic energy of the system is equal
to work done on the system by the external as well as the internal forces.