a wheel has constant angular acceleration of 4 rad/s^2 the wheel turns through angle 150 rad in 3 sec if the wheel starts from rest find(i) angular speed (ii) time elapsed at the commencement of 3 sec time interval
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Answer:
The angle is
=
10
r
a
d
Explanation:
The angular acceleration is
α
=
3
r
a
d
s
−
2
The initial angular speed is
ω
0
=
2
r
a
d
s
−
1
The time is
t
=
2
s
Apply the equation
θ
=
ω
0
t
+
1
2
α
t
2
The angle is
θ
=
2
⋅
2
+
1
2
⋅
3
⋅
2
2
=
4
+
6
=
10
r
a
d
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