An object with a mass of 4kg is revolving around a point at a distance of 5m. If the object is revolving at a rate of 3Hz, what is the centripetal force on the object?
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The centripetal force is F= m
rw2
The mass of the object is
m
=
4
k
g
The radius of the circle is
r
=
5
m
The frequency is
f
=
3
H
z
The angular velocity is
ω
=
2
π
f
=
2
⋅
π
⋅
3
=
6
π
r
a
d
s
−
1
The centripetal force is
F
=
4
⋅
5
⋅
(
6
π
)
2
=
7106.1
N
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