Kinematics Question 538

Question: A cane filled with water is revolved in a vertical circle of radius 4 meter and the water just does not fall down. The time period of revolution will be [CPMT 1985; RPET 1995; UPSEAT 2002; MH CET 2002]

Options:

A) 1 sec

B) 10 sec

C) 8 sec

D) 4 sec

Show Answer

Answer:

Correct Answer: D

Solution:

For critical condition at the highest point $ \omega =\sqrt{g/R} $

therefore $ T=\frac{2\pi }{\omega }=2\pi \sqrt{R/g}=2\times 3.14\sqrt{4/9.8} $ = 4 sec.



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