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Physics
Physics
Problem
Which one of the following expressions represents the magnitude of centripetal acceleration
a
c
a_c
a
c
of a body moving with angular speed
ω
\omega
ω
in a circle of radius
r
r
r
? a)
a
c
=
ω
r
2
a_c = \omega r^{2}
a
c
=
ω
r
2
b)
a
c
=
ω
2
r
\displaystyle a_c = \dfrac{\omega^{2}}{r}
a
c
=
r
ω
2
c)
a
c
=
ω
2
r
a_c = \omega^{2} r
a
c
=
ω
2
r
d)
a
c
=
ω
r
a_c = \omega r
a
c
=
ω
r
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