Question
Question: A spring of force constant 10 N/m has initial stretch 0.2 m. In changing the stretch to 0.25 m, the ...
A spring of force constant 10 N/m has initial stretch 0.2 m. In changing the stretch to 0.25 m, the increase of PE is about –
A
0.1 joule
B
0.2 joule
C
0.3 joule
D
0.5 joule
Answer
0.1 joule
Explanation
Solution
DU=
= 