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A disc is at rest at the top a rough inc...

A disc is at rest at the top a rough incined plane. It rolls without. At the bottom of the inclined plane there is a vertical groove of radius 'R'. In order to loop the groove, the minimum height of incline required is

A

`(15R)/(4)`

B

`(9R)/(4)`

C

`(5R)/(2)`

D

`(7R)/(5)`

Text Solution

Verified by Experts

The correct Answer is:
A
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