Answer the following questions related to elastic potential energy of a spring:
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
Answer the following questions related to elastic potential energy of a spring:
(i) Define elastic potential energy of a stretched or compressed spring and write its standard mathematical expression in symbols.
(ii) If the extension in a given spring is doubled while the spring constant remains unchanged, explain qualitatively and with suitable mathematical reasoning how the elastic potential energy stored in the spring changes.
(iii) Describe briefly, with reason, how the area under the straight-line force–extension graph of an ideal spring represents the elastic potential energy stored in the spring.