Question

A body is revolving with a uniform speed v in a circle of radius r. The angular acceleration of the body is

• A. $\frac{v}{r}$
• B. Zero
• C. $\frac{v^{2}}{r}$along the radius and towards the centre
• D. $\frac{v^{2}}{r}$along the radius and away from the centre

Answer 1

Answer: (B)

Zero

Answer 2

In uniform circular motion ω constant so $\alpha = \frac{d\omega}{dt} = 0$