An object with a mass of #4 kg# is revolving around a point at a distance of #2 m#. If the object is making revolutions at a frequency of #9 Hz#, what is the centripetal force acting on the object?

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Answer 1 · 2018-04-18T09:51:23

The centripetal force is #=28503.4N#

The centripetal force is

#F=mromega^2#

The mass of the object is

#m=4kg#

The radius of the circle is

#r=2m#

The frequency of rotation is

#f=9Hz#

The angular velocity is

#omega=2pif=2*pi*9=19pirads^-1#

Therefore,

the centripetal force is

#F=4*2*(19pi)^2=28503.4N#