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A cart with mass m is held at rest against a spring with spring constant k. It is compressed a
distance x. When released from rest, it is launched through a frictionless track. It contains a vertical loop
7.
with a radius of R.
Find the force the track exerts on the cart when the cart goes through the top of the loop in terms of m,
k, F, and R and any other constants.
R
k
m

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