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MHT CET 2018 Physics Solved Paper
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© examsnet.com
Question : 34
Total: 50
A mass attached to one end of a string crosses top-most point on a vertical circle with critical speed. Its centripetal acceleration when string becomes horizontal will be (g = gravitational acceleration)
g
3g
4g
6g
Validate
Solution:
(b) Speed at top most point, v =
√
3
r
g
Centripetal acceleration,
a
c
=
v
2
T
=
3
r
g
r
= 3g
© examsnet.com
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