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JEE Main Physics Class 11 Laws of Motion Part 2 Questions
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© examsnet.com
Question : 66
Total: 91
A disc with a flat small bottom beaker placed on it at a distance
R
from its center is revolving about an axis passing through the center and perpendicular to its plane with an angular velocity
ω
. The coefficient of static friction between the bottom of the beaker and the surface of the disc is
µ
. The beaker will revolve with the disc if :
[25-Jun-2022-Shift-2]
R
≤
µ
g
2
ω
2
R
≤
µ
g
ω
2
R
≥
µ
g
2
ω
2
R
≥
µ
g
ω
2
Validate
Solution:
To move together
ω
2
R
≤
µ
g
⇒
R
≤
µ
g
ω
2
© examsnet.com
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