A spiral spring of natural length 30.0cm and force constant of 20Nm-1 is compressed to 20.0cm. Calculate the energy stored in the spring
-
A.
0.1J -
B.
1.0J -
C.
10.0J -
D.
100.0J
Correct Answer: Option A
Explanation
Energy = (frac{1}{2} ke^2 = frac{1}{2} times 20 times 0.1^2)
= 0.1J