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MHT CET 2019 Physics Solved Paper
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© examsnet.com
Question : 1
Total: 50
A sotne of mass 1 kg is tied to a string of length 2m long and is rotated at constant speed of 40
ms
−
1
in a vertical circle. The ratio of the tension at the top and the bottom is [Take
g
=
10
ms
−
2
]
81
79
79
81
19
12
12
19
Validate
Solution:
T
top
=
m
v
2
r
−
m
g
.....(i)
T
bottom
=
m
v
2
r
+
m
g
.....(ii)
Solving (i) and (ii) we get:
T
top
T
bottom
=
v
2
−
r
g
v
2
+
r
g
=
79
81
© examsnet.com
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