Question

A particle in uniform circular motion is projected on its diameter. The motion of projection will be simple harmonic. Select the correct option regarding speed and acceleration of the particle in circular motion.

(a) Speed is constant, acceleration is zero

(b) Speed is constant, acceleration is non-zero

(c) Speed changes, acceleration is non-zero

(d) Speed changes, acceleration is zero

I have been asked this question during an online exam.

The question is from Oscillations in section Oscillations of Physics – Class 11

Answer 1

Correct choice is (a) Speed is constant, acceleration is zero

To explain: For the particle in uniform circular motion, magnitude of velocity is constant, but direction is continuously changing. Thus, speed is constant but acceleration is non-zero.