Question

Fix this problem, please.

Answer 1

The correct option is (a).

Step-by-step explanation:

Given that,

Radius of a horizontal circle, r = 80 cm = 0.8 m

Angular velocity, ω = 5 rev/minute = 0.523 rad/s

We need to find the magnitude of its centripetal acceleration. The formula that is used to find the centripetal acceleration is given by :

`a=\omega^2 r\\\\a=(0.523)^2* 0.8\\\\a=0.218\ m/s^2`

or

`a=0.22\ m/s^2`

So, the magnitude of its acceleration is
`0.22\ m/s^2`.