A Hooke's law spring is mounted horizontally over a frictionless surface.The spring is then compressed a distance d and is used to launch a mass m along the frictionless surface.What compression of the spring would result in the mass attaining double the kinetic energy received in the above situation?
A)1.41d
B)1.73d
C)2.00d
D)4.00d

Question

Quizplus · Accepted Answer

The kinetic energy received by the mass is proportional to the square of the compression distance of the spring. To double the kinetic energy, you need to increase the compression distance by the square root of 2, which is approximately 1.41.

A Hooke's Law Spring Is Mounted Horizontally Over a Frictionless