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tracie34_19992003
tracie34_19992003
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$1.00 physics

  • From Physics: General-Physics
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  • Due on Nov. 08, 2009
  • Asked on Nov 06, 2009 at 10:38:34PM
Q:

An electric motor rotating a workshop grinding wheel at a rate of 91 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 1.50 rad/s2.

(a) How long does it take for the grinding wheel to stop?
1 s

(b) Through how many radians has the wheel turned during the interval found in (a)?
2 rad
 


   
   
   
   
 
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Onlinetutor365
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$1.00 An electric motor rotating a workshop grinding wheel at a rate of 91 rev/min is switched off. Assume the wheel has a con

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  • Posted on Nov 06, 2009 at 10:54:53PM
A:
Preview: ... = 91 rev/min * 6.28 rad/rev / 60 sec/min = 9.52 rad/sec Vf = Vi + a * t 0 = 9.52 rad/sec - 1.50 rad/sec^2 ...

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