A long spring when stretched by 2cm its potential energy is U. If the same spring is stretched by 8cm the potential energy of the spring is ----

A long spring when stretched by 2cm its potential energy is U. If the

1.	A long spring when stretched by 2cm its potential energy is U. If the same spring is stretched by 8cm the potential energy of the spring is ----
Answer» 8U 16U 4U U ANSWER :2