Physics (AS & A Level) · Feb / March 2018 · Paper 12 · Question 16

A bead is released from rest at point P and slides along a wire, as shown. The track loops around and forms a vertical circle of diameter 40 cm. At point Q, the bead has a speed of 1.4 m s⁻¹. Air resistance and friction on the wire are negligible. What is the height h from which the bead is released?

1. A0.30 m
2. B0.40 m
3. C0.50 m
4. D0.60 m

As printed in the paper