Published by:
CGP EDU Academic Team
Published on: August 13, 2026
A closed circular tube of average radius 
, whose inner walls are rough, is kept in vertical plane. A block of mass 
just fit inside the tube. The speed of block is 
, when it is introduced at the top of tube. After completing five oscillations, the block stops at the bottom region of tube. The work done by the tube on the block is___J. [Given 
]
Text Solution
Verified by ExpertsThe correct answer is:
245
(245)
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