1. Mar 4, 2010 #1

   fionahanson

   

   1. The problem statement, all variables and given/known data
   
   I have a question that im unsure of how to answer
   
   A round metal bar is machined at a cutting speed of 90.m.min, if the diameter of the bar is 80mm determine.....
   
   a. The chuck speed in rad.s and rev.min
   
   If it takes 3s to get to this speed from rest (0)
   
   b. What is the angular acceleration a?
   
   Im not sure of relevant equations for this question, could someone help me work this out please?
   
   Thank you sooo much.

    

   Last edited: Mar 4, 2010

   fionahanson, Mar 4, 2010
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3. Mar 4, 2010 #2

   rock.freak667

   

   Homework Helper

   the linear velocity is related to the angular velocity by the equation v=rω.
   
   Angular acceleration is the rate of change of angular velocity = dω/dt =Δω/Δt

    

   rock.freak667, Mar 4, 2010

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