# A cane filled with water is revolved in a vertical circle of radius 4m and the water just does not fall down the time period of revolution will be

148 Points
12 years ago

Dear pallavi

at the top most position

three forces will act on the water

1 weight in the downward direction

2  normal reaction by bucket in the downward direction

3 centrifugal force in the upward direction

so  mg + N =mv2/r

for water just does not fall   N ≥ 0

so  mg = mv2/r

v =√gr

so time period T = 2∏r/v

=2*3.14*4 /√4g

=3.14*4 /√9.8

=4.01

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NISA
12 Points
7 years ago
i did nt understand the solution * this star idicates n my did v take n=o
Rishi Sharma
2 years ago
Dear Student,

at the top most position
three forces will act on the water
1 weight in the downward direction
2 normal reaction by bucket in the downward direction
3 centrifugal force in the upward direction
so mg + N =mv2/r
for water just does not fall N ≥ 0
so mg = mv2/r
v =√gr
so time period T = 2∏r/v
=2*3.14*4 /√4g
=3.14*4 /√9.8
=4.01
Thanks and Regards