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![[Post New]](/templates/default/images/icon_minipost_new.gif) 3 Sep 2007 18:28:55 IST
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The assembly of two discs as shown in fig is placed on a rough horizontal surface and the front disc is given an initial angular velocity w. Determine the final linear and angular velocity when both the discs start rolling. It is given that friction is sufficent to sustain rolling in the rear wheel from the starting of motion.
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<TABLE CELLSPACING="1" CELLPADDING="1" BORDER="0">
<TR><TD>
<DIV ALIGN="right">Animated Letters</DIV></TD></TR></TABLE>
I am only one,
But still I am one.
I cannot do everything,
But still I can do something;
And because I cannot do everything
I will not refuse to do the something that I can do.
- Edward Everett Hale
Rahul Dey
Dept. of Electronics & Electrical
Communication Engineering,
IIT Kharagpur
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Initial angular momentum = I.w
Final angular velocity os the discs is w1, say
then Iw1+Iw1 = Iw
w1=w/2
since its a pure rolling...linear velocity will be w.R/2
hope it helps
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5 Sep 2007 13:09:48 IST
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the answer is wR/6 and w/6
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<TABLE CELLSPACING="1" CELLPADDING="1" BORDER="0">
<TR><TD>
<DIV ALIGN="right">Animated Letters</DIV></TD></TR></TABLE>
I am only one,
But still I am one.
I cannot do everything,
But still I can do something;
And because I cannot do everything
I will not refuse to do the something that I can do.
- Edward Everett Hale
Rahul Dey
Dept. of Electronics & Electrical
Communication Engineering,
IIT Kharagpur
|
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25 Sep 2007 17:56:53 IST
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so finally no one could solve it!
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