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HumanPerson
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Here is the question:
A spring is compressed 20cm. When it is released, it exerts an average force of 57.2 N on a 7.3 kg rock, shooting it across a frictionless floor. Determine the speed of the rock as it leaves the spring.
W=change in energy
Work energy theorem
W=Fd
W=Fd
=(0.20cm)(57.2N)
=11.44J
W= change in EP elastic
=1/2kx^2
Rearrange formula to solve for k (spring constant)
=10.69579357 N/m
A spring is compressed 20cm. When it is released, it exerts an average force of 57.2 N on a 7.3 kg rock, shooting it across a frictionless floor. Determine the speed of the rock as it leaves the spring.
Homework Equations
W=change in energy
Work energy theorem
W=Fd
The Attempt at a Solution
W=Fd
=(0.20cm)(57.2N)
=11.44J
W= change in EP elastic
=1/2kx^2
Rearrange formula to solve for k (spring constant)
=10.69579357 N/m