Question

A long spring is stretched by 2 cm its poential energy is v. If the spring is stretched by 10cm its potential energy would be

Answer 1

Answer:

5v

Explanation:

p.e.=1/2kx2

now p.e.1=1/2 k 4 =2k=v

finally p.e.2=1/2 k 100=50k=5v