ROTATION

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ROTATION

Questions & Discussions » Physics Discussions


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Replies : 0	Last Replied :11/04/2008

Views : 130	Go to last reply

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11/04/2008 21:13:37

Title: ROTATION

Status : Answered but not Reviewed

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ANUPAM SOBTI

Joined: 13/11/2007

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A sphere, a ring and a disc (all of the same mass) are allowed to roll down an incline which is rough enough to prevent slipping.Which of these will come to the bottom the earliest ?

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11/04/2008 21:30:09

Title: Re:ROTATION

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Indranil Chakraborty

Joined: 03/12/2007

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Using $a=gsin\theta/(1+{k}^{2}/{r}^{2})$ and substituting ${k}_{sphere}=\sqrt{2/5}r, {k}_{ring}=\sqrt{1}r, {k}_{disc}=\sqrt{1/2}r$ we get ${a}_{sphere}>{a}_{disc}>{a}_{ring}$ so sphere reaches before disc which reaches before ring. Am I correct?

This message was edited 4 times. Last update was at 11/04/2008 21:37:02

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