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The staples inside a stapler are kept in place by a spring with a relaxed length of...
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Elastic potential energy is given by
Where k is the spring constant (49.0 N/m)
x is the displacement away from the rest length = Lf - Li = 0.030 m
EPE = 1/2 (49.0 N/m)(0.030 m)^2 = 0.0221 Nm or 0.0221 Joules.
Posted by mwmovr40 on December 8, 2011 at 7:17 AM (Answer #1)
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