What is the magnitude of the net force that the track exerts on the ball?

Question

A 28 g ball rolls around a 44 cm diameter L-shaped track, shown in Figure Ex7.16, at 60 rpm. What is the magnitude of the net force that the track exerts on the ball? Rolling friction can be neglected.

Answer 1

ω = 60/60 * 2pi rad/s; r = 0.22 m; m = 0.028 kg
Fx = mω^2r
Fy = mg
F = sqrt(Fx^2 + Fy^2)

Answer 2

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