Q. A bucket tied at the end 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 (Take $g = 10m/\sec^{2}{\ )}$
A) $4\ m/sec$
B) $6.25\ m/sec$
C) $16\ m/sec$
D) None of the above
Explanation
(a) Centripetal velocity at highest point $= \sqrt{gR} = \sqrt{10 \times 1.6} = 4m/s$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.