Question

A toy car moves around a loop-the-loop track. The loop is
0.5 m high.What is the minimum speed of the car at the top of
the loop for it to stay on the track?

Answer 1

at the top of the loop , gravity is supplying the centripetal force

m * v^2 / r = m * g ... v^2 = r * g

Answer 2

Good

Answer 3

No