An ideal spring is compressed by 0.20 m and used to launch a 3.0
kg mass vertically into the air. The mass
reaches a maximum height of 0.40 m above its starting point, where
it was released from rest. How much work did
the spring do on the mass during this process?
Solution:
Given:
h = 0.40 m
m = 3 kg
Work done by the spring = Potential energy gained by the mass
Thus : Wspring = m g h = (3 kg)(9.81 m/s2)(0.40 m) = 11.77 J
An ideal spring is compressed by 0.20 m and used to launch a 3.0 kg mass...