Question
Question: A long spring is stretched by x cm its PE is U. If the spring is stretched by Nx cm the PE stored in...
A long spring is stretched by x cm its PE is U. If the spring is stretched by Nx cm the PE stored in it will be –
A
U / N
B
N U
C
N2U
D
U / N3
Answer
N2U
Explanation
Solution
U = ;
U' = =
=UN2