A Hooke's law spring is compressed a distance d and is used to launch a mass m vertically to a height h above its starting position.Under the same compression d,the spring is now used to launch a mass of 2m.How high does this second mass rise?
A) h
B) h/2
C) h/1.41
D) h/4

Question

Quizplus · Accepted Answer

The potential energy stored in the spring is converted to gravitational potential energy. For the first mass m, the energy is mgh. For the second mass 2m, the energy is 2mg(h/2) = mgh, so the height is h/2.

A Hooke's Law Spring Is Compressed a Distance D and Is