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76. The wheel starts turning from rest (
ω
0
= 0) at
t
= 0, and accelerates uniformly at
2
2.00 rad/s
α
=
.Between
t
1
and
t
2
the wheel turns through
Δ
θ
= 90.0 rad, where
t
2
–
t
1
=
Δ
t
= 3.00 s. We solve (b) first.
(b) We use Eq. 1013 (with a slight change in notation) to describe the motion for
t
1
≤
t
≤
t
2
:
ΔΔ
Δ
Δ
Δ
Δ
θω
=+
¡
=−
1
2
1
1
22
tt
t
t
()
which we plug into Eq. 1012, set up to describe the motion during 0
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 Spring '08
 Any
 Physics, Light

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