A 0.35 kg puck is attached to the end of a light string and whirled in a horizontal…
PHYSICS · Multi-part · CBSE · Physics · Motion in a Plane · Motion in a Plane
Problem
A 0.35 kg puck is attached to the end of a light string and whirled in a horizontal circle on a nearly frictionless air table. The string remains taut and traces a circle of radius 0.75 m. The puck completes exactly 5.0 revolutions in 4.0 s.
(a) Calculate the period of the puck’s motion.
(b) Determine the linear speed of the puck.
(c) Compute the magnitude of the puck’s centripetal acceleration.
(d) Determine the tension in the string while the puck moves in the circle.
(e) The experiment is repeated with the same puck, but the radius is doubled while the period remains unchanged. Without further calculation, state how the new centripetal acceleration compares with the original value and justify your answer mathematically.