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There are two identical springs, each of...

There are two identical springs, each of spring constant 240 N/m, one of them is compressed by 10cm and the other is stretched by 10 cm. What is the difference in the potential energies stored in the two springs ?

A

Zero

B

1.2 J

C

4 J

D

12 J

Text Solution

Verified by Experts

The correct Answer is:
A
P.E. stored in a spring `= (1)/(2) Kx^(2)`
where x is the extension or compression. In both cases, work is done on the spring.
`:.` For same x, the same potential energy will be stored in the springs.
`:.` The difference between the energies is zero.
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