A bucket tied at end of a 1.6, m long string is whirled in a vertical circle with constant speed. Wh

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5.Work, Energy, Power and Collision

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A bucket tied at the end of a $1.6\, m$ long string is whirled in a vertical circle with constant speed. What should be the minimum speed so that the water from the bucket does not spill, when the bucket is at the highest position ........ $m/sec$ (Take $g = 10\,m/{\sec ^2}$)

A

$4$

B

$6.25$

C

$16$

D

None of the above

(AIIMS-2017) (AIIMS-1987)

Solution

(a) Critical velocity at highest point$ = \sqrt {gR} = \sqrt {10 \times 1.6} $

$=4\,m/s$

Standard 11

Physics

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