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Class 11 NEET Physics Motion in a Plane Questions
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© examsnet.com
Question : 13
Total: 74
A particle starting from rest, moves in a circle of radius '
r
'. It attains a velocity of
V
0
m
∕
s
in the
n
th
round. Its angular acceleration will be :-
[NEET OD 2019]
V
0
n
rad
∕
s
2
V
0
2
2
π
n
r
2
rad
∕
s
2
V
0
2
4
π
n
r
2
rad
∕
s
2
V
0
2
4
π
n
r
rad
∕
s
2
Validate
Solution:
👈: Video Solution
˙
θ
=
(
2
π
n
)
,
ω
0
=
0
,
ω
=
V
0
∕
r
α
=
ω
2
−
ω
0
2
2
θ
=
(
V
0
∕
r
)
2
−
0
2
(
2
π
n
)
=
V
0
2
4
π
n
r
2
© examsnet.com
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