Conceptual Dynamics - Independent Learning

Potential Energy - Example 7.5-3

 

What is the elastic potential energy of the spring shown at position 2 given that the un-stretched length of the spring is 15 cm, the final length is 25 cm and Ve = (1/2)kx2?

 

 

Ve,2 = *k  J     

 

What is the elastic potential energy of the spring at position 1 in the above figure?

 

Ve,1 = *k  J      

 

Can the elastic potential energy Ve = (1/2)kx2 be negative?

 



 

 

 

What is the elastic potential energy of the spring shown below at position 2 given that the unstretched length of the spring is 25 cm, the final length is 15 cm and Ve = (1/2)kx2?

 

 

Ve,2 = *k  J