A spring of force constant 1500Nm-1 is acted upon by a constant force of 75N. Calculate the potential energy stored in the string
-
A.
1.9J -
B.
2.8J -
C.
3.45J -
D.
0.43J
Correct Answer: Option A
Explanation
P.E = (frac{1}{2})Fe
= (frac{1}{2})(frac{F}{K})
= (frac{1}{2}) x (frac{75 times 75}{1500})
= 1.9J