Question

An object with a mass of `15 kg` is revolving around a point at a distance of `16 m`. If the object is making revolutions at a frequency of `15 Hz`, what is the centripetal force acting on the object?

Answer 1

I got:
`F_c=1,932,407N`

Explanation:

We start remembering that centripetal force is:

`F_c=mv^2/r`

To evaluate the velocity we use frequency and we consider that our object is making 15 revolutions in 1 second so we get that it takes:
`1/15=0.07s` to complete one revolution that represents a distance along a circle of `2pir=2*3.14*16=100.53~~100.5m`.
Velocity will then be: `v=100.5/0.07=1435.7m/s`

So we get:
`F_c=15*(1435.7)^2/16=1,932,407N`