Question

Assertion :We can call circular motion also as simple harmonic motion. Reason: Angular velocity in uniform circular motion and angular frequency in simple harmonic motion have the same meanings.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

The correct option is D Both Assertion and Reason are incorrect

In circular motion $a={\omega }^{2}r$ which cannot be an equation of simple harmonic motion where $a=-{\omega }^{2}x$. Therefore, assertion is incorrect.
In uniform circular motion, angular velocity is angular rate of rotation while in simple harmonic motion angular frequency is mainly frequency of oscillations converted to radians per second. They are not same. Therefore, reason is also incorrect.