Physics Help Forum To find Angular Displacement

 Kinematics and Dynamics Kinematics and Dynamics Physics Help Forum

 Mar 6th 2010, 05:40 PM #1 Member   Join Date: Nov 2009 Posts: 94 To find Angular Displacement Hello, Need help on how to set this up and the answer, so I can study it to understand it. A shaft whose diameter is 10 cm rotates with an angular speed of 1.00 rad / second. Calculate the angular displacement IN RADIANS, if the shaft rotates for 3.75 seconds?? PLEASE HELP STUCK ON THIS> I know you convert the diam which comes to 0.05 m for RADIUS But don't know which formula to use tho?? THANKS for your help Joanne
Mar 6th 2010, 06:55 PM   #2
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 Originally Posted by bradycat Hello, Need help on how to set this up and the answer, so I can study it to understand it. A shaft whose diameter is 10 cm rotates with an angular speed of 1.00 rad / second. Calculate the angular displacement IN RADIANS, if the shaft rotates for 3.75 seconds?? PLEASE HELP STUCK ON THIS> I know you convert the diam which comes to 0.05 m for RADIUS But don't know which formula to use tho?? THANKS for your help Joanne
The answer is pretty straightforward. I'm not sure what you're trying to do with finding the radius.
Each second, the shaft rotates by 1 rad. After n seconds, how many radians will the shaft rotate? Answer this and replace n by 3.75 to reach the answer.
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