October 23rd, 2006, 06:38 AM
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#1
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The Cardinal Smiles
Join Date: Dec 2002
Location: Nashville
Posts: 16,490
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More Physics Help
have a few more questions for today
1. A uniform rod of mass m1 and length L rotates in a horizontal plane about a fixed axis through its center and perpendicular to the rod. Two small rings, each with mass m2, are mounted so that they can slide along the rod. They are initially held by catches at positions a distance r on each side from the center of the rod, and the system is rotating at an angular velocity w. Without otherwise changing the system, the catches are released, and the rings slide outward along the rod and fly off at the ends.
a. What is the angular speed of the system at the instant when the rings reach the ends of the rod? (I figuered this part out with conservation of angular momentum)
b. What is the angular speed of the rod after the rings leave it?
thanks
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Signed,
arthurpostpadder
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October 23rd, 2006, 10:51 AM
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#2
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...
Join Date: Jul 2004
Posts: 44,482
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Quote:
Originally Posted by arthurracoon
have a few more questions for today
1. A uniform rod of mass m1 and length L rotates in a horizontal plane about a fixed axis through its center and perpendicular to the rod. Two small rings, each with mass m2, are mounted so that they can slide along the rod. They are initially held by catches at positions a distance r on each side from the center of the rod, and the system is rotating at an angular velocity w. Without otherwise changing the system, the catches are released, and the rings slide outward along the rod and fly off at the ends.
a. What is the angular speed of the system at the instant when the rings reach the ends of the rod? (I figuered this part out with conservation of angular momentum)
b. What is the angular speed of the rod after the rings leave it?
thanks
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Can't help you. Went to ASU. 
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October 23rd, 2006, 12:34 PM
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#3
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The Cardinal Smiles
Join Date: Dec 2002
Location: Nashville
Posts: 16,490
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i got it
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Signed,
arthurpostpadder
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October 23rd, 2006, 01:29 PM
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#4
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Registered User
Join Date: Oct 2003
Posts: 21,836
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Yes. The answer is yes.
/business major
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October 25th, 2006, 01:41 PM
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#5
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.
Join Date: Nov 2002
Posts: 11,531
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42
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"...fools and fanatics are always so certain of themselves, but wiser people so full of doubts." - Bertrand Russell
"Get your facts first, and then you can distort them as much as you please."
-Samuel Langhorne Clemens (Mark Twain)
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October 25th, 2006, 03:01 PM
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#6
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Like a boss
Join Date: May 2003
Location: Tempe
Posts: 15,074
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Quote:
Originally Posted by abomb
Yes. The answer is yes.
/business major
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OMG, that's great!
"Of course we can do that. Why not?"
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RIP King of Cards
Tim Minnick 9/12/1972-3/4/2007
You'll be missed.
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Linear Mode
