EXAMPLE 4: THE WORK-ENERGY RELATION


 

 

The particle starts from rest at A and moves along the smooth circular bar under the constant horizontal force and under gravity. Calculate the velocity of the particle as a function of .

 


Solution:

 

        Work of N equals zero since it is perpendicular to the path at all the times.

        Work of and mg

        Work-Energy relation:

start from rest)

(1) into (2)