A spiral spring of natural length 30 0cm and fo... - WAEC Physics 2002 Question
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 option: a
Energy = (\frac{1}{2} ke^2 = \frac{1}{2} \times 20 \times 0.1^2)
= 0.1J
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