Physics

Problem

A vertical spring of force constant

800\,\text{N/m}

rests on the floor. A

0.50\,\text{kg}

sphere is gently placed on the spring and then pushed downward so that the spring is compressed

x

from its natural length and the sphere is released from rest. The sphere rises after leaving the spring and reaches a maximum height of

1.2\,\text{m}

above the point of release (air resistance is negligible). What is the value of

x

? a)

0.17\,\text{m}

0.35\,\text{m}

0.12\,\text{m}

0.087\,\text{m}