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Physics
Physics
Problem
Which of the following expressions gives the tangential (linear) acceleration
a
t
a_t
a
t
of a point located a distance
r
r
r
from the axis of rotation when the object has an angular acceleration
α
\alpha
α
? a)
a
t
=
r
ω
2
a_t = r\omega^{2}
a
t
=
r
ω
2
b)
a
t
=
r
α
a_t = r\alpha
a
t
=
r
α
c)
a
t
=
1
2
r
α
a_t = \dfrac{1}{2}\,r\alpha
a
t
=
2
1
r
α
d)
a
t
=
r
(
α
+
ω
2
)
a_t = r(\alpha+\omega^{2})
a
t
=
r
(
α
+
ω
2
)
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