Question

In the given figure a $=15m/s^2$ represents the total acceleration of a particle moving in clockwise direction in a circle of radius R = 2.5m at a given instant of time. The speed of the particle is:

• A. 4.5 m/s
• B. 5.0 m/s
• C. 5.7 m/s
• D. 6.2 m/s

Answer 1

The correct option is C

5.7 m/s

$acos{30}^{\circ }=\frac{V^2}{R}v=5.7m/s$