Angular acceleration - Please check if this is correct and

  • Thread starter nukeman
  • Start date
  • #1
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Angular acceleration - Please check if this is correct and....

Homework Statement



Question:

Each of the tires of a car makes 85.0 revolutions as the car reduces its speed uniformly from 90.0 km/h to 60.0 km/m, The tires have a diamater of .900m.

Find initial and final angular Velocities

Find the angular acceleration of tires in rad/s^2

My answers: Please tell me if thats right, because I have NO idea if its correct.

awu9at.jpg


Homework Equations





The Attempt at a Solution

 

Answers and Replies

  • #2
993
13


If I am interpreting your work correctly, you are changing the km to m by multiplying by 900 instead of by 1000.

I think that the rest is OK.
 
  • #3
655
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Oops lol

Where whereever I have 900, change to 1000 correct? Just to be sure :)

Because when I change that, I get -1.60 is that correct for this question?

Because someone told me they got -4.88 ?
 
Last edited:
  • #4
993
13


I got angular acc = -1.605rad/sec^2.
 

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