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A disc of radius r is cut from a larger ...

A disc of radius r is cut from a larger disc of radius 4r in such a way that the edge of the hole touches the edge of the disc. The centre of mass of the residual disc will be a distance from centre of larger disc :-

A

`(r)/(5)`

B

`(r)/(4)`

C

`(r)/(2)`

D

`(r)/(3)`

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • A circular hole of raidus 1 cm is cut off from a disc of radius 6 cm. The centreof the hole is 3 cm from the centre of the disc. Then the distance of the centre of mass of the remaining disc from the centre of the disc is

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