Question

If speed of an object revolving in a circular path is doubled and angular speed is reduced to half of original value, then centripetal acceleration will become/remain

• A. same
• B. Double
• C. Half
• D. Quadruple

Answer 1

The correct option is B Double

If speed of an object revolving in a circular path is doubled and regular speed is reduced to half then centripetal acceleration is as below$,$

$a=v^{2}r$

$a^{\prime }={\left(2v\right)}^2/2r$

$=4v^2/2r$

$=2a.$

$\therefore$ the centripetal acceleration doubles$.$

Hence'

option $\left(B\right)$ is correct answer.