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

When a long spring is stretched by 2 cm, its potential energy is U. If

1.	When a long spring is stretched by 2 cm, its potential energy is U. If the spring is streched by 10 cm, the potential energy in it will be
Answer» 10 U 25 U `U/5` `5U` Answer :B