Question

a body is moving with constant speed of 5 metre per second in a circle of radius 2 metre acceleration of particle is ?
A. 5 metre per second square
B. 10 metre per second square
C. 12.5 metre per second square
D.
15 metre per second square

Answer 1

(C) 12.5 metre per second square,

The acceleration of particle is 12.5 metre per second square.

Explanation:

Given,

Constant speed (v) = 5 $\dfrac{m}{s}$,

radius of circle(r) = 2 m

To find Acceleration of particle(a) = ?

We know that,

a = $\dfrac{v^{2}}{r}$

∴ a = $\dfrac{5^{2}}{2}$

= $\dfrac{25}{2}$

= 12.5 $\dfrac{m}{s^{2} }$

Hence, the acceleration of particle is 12.5 metre per second square.