Consider the formula for the potential energy of a stretched or compressed spring.
P.E. = (1/2) k X^2
The work required equals the potential energy increase. In your case the amount of stretching is X=0.10 meter
A spring with a spring constant k = 50N/m has an unstretched length of 20cm. Find the work required to stretch the spring to a length of 30 cm.
W = J ?? any help guys?
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