Question

The acceleration of an object moving with speed $u$ in a circle of radius $r$ is

• A. ${\upsilon }^{2}r$
• B. $r/{\upsilon }^2$
• C. ${\upsilon }^2/r$
• D. ${\upsilon }^2/r^2$

Answer 1

Answer: (C)

${\upsilon }^2/r$

The acceleration (a) of an object which is moving in a circle is dependent upon the speed (v) at which it moves and the radius (R) of the circular path about which it moves. The relationship is expressed by the following equation.

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

Hence,option C is correct.