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When a long spring is stretched by 2 cm,...

When a long spring is stretched by 2 cm, its potential energy is V. If the spring is stretched by 10 cm, the potential energy in it will be

A

`(U)/(5)`

B

U

C

5U

D

25 U

Text Solution

Verified by Experts

The correct Answer is:
D
`U prop x^(2)rArr (U_(2))/(U_(1))=((x_(2))/(x_(1)))^(2)=((0.1)/(0.02))^(2)=25 therefore U_(2)=25U`
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