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# A 48.5-g toy car is released from rest on a frictionless track with a vertical loop...

A 48.5-g toy car is released from rest on a frictionless track with a vertical loop of radius R. The initial height of the car is h = 4.45R.

(a) What is the speed of the car at the top of the vertical loop? (Use the following as necessary: R and g.)

(b) What is the magnitude of the normal force acting on the car at the top of the vertical loop?

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