A spring with a spring constant of 8.0 N/m is compressed to 20 cm.If the spring is uncompressed initially,then the work done is
A) 0.12 J.
B) 0.16 J.
C) 0.19 J.
D) 0.22 J.
E) 0.26 J.

Question

Quizplus · Accepted Answer

The work done on a spring is given by the formula $ W = \frac{1}{2} k x^2 $, where $ k $ is the spring constant and $ x $ is the compression distance. Here, $ k = 8.0 \, \text{N/m} $ and $ x = 0.20 \, \text{m} $. So, $ W = \frac{1}{2} \times 8.0 \times (0.20)^2 = 0.16 \, \text{J} $.

A Spring with a Spring Constant of 8