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WBJEE 2015 Physics Solved Paper
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Question : 39
Total: 40
A circular disc rolls on a horizontal floor without slipping and the centre of the disc moves with a uniform velocity v.Which of the following values the velocity at a point on the rim of the disc can have?
v
-v
2v
Zero
Validate
Solution:
Note : If velocity is considered as vector then from the diagram it is clear that velocity vector –v and v is not possibleat any point of the rim. The velocity vector 2v and o are possible hence correct answers will become (C,D).
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