Question

A long spring when stretched by x cm has a potential energy U. When stretching in increased to nx, the potential energy stored in the spring will be

• A. $\frac{U}{n}$
• B. nU
• C. $n^{2}U$
• D. $\frac{U}{n^2}$

Answer 1

The correct option is C $n^{2}U$