A stone tied to a string is whirled in a horizontal circle of radius
PHYSICS · Multi-part · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics
Problem
A stone tied to a string is whirled in a horizontal circle of radius 1.5m. It completes 5 revolutions in 6s.
(a) Calculate the magnitude of its speed.
(b) State the direction of its velocity when the stone is at a particular point on the circle.
(c) Is the stone accelerating at that point? Give a reason for your answer.