Q. A body is tied to one end of the string and whirled in a vertical circle, the physical quantity which remains constant is
A) Momentum
B) Speed
C) Kinetic energy
D) Total energy
Explanation
(d) Momentum, speed and kinetic energy change continuously in a vertical circular motion. The physical quantity which remains constant is the total energy.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.