Q. Which of the following statements is false for a particle moving in a circle with a constant angular speed?
A) The velocity vector is tangent to the circle
B) The acceleration vector is tangent to the circle
C) The acceleration vector point to the center of the circle
D) The velocity and acceleration vectors are perpendicular to each other
Explanation
(b) For a particle moving in a circle with constant angular speed, velocity vector is always tangent to the circle and the acceleration vector always points towards the center of circle or is always along radius of the circle. Since, tangential vector is perpendicular to the acceleration vector. But in no case acceleration vector is tangent to the circle.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.