Rotational Kinematics

  • #1
A solid ball with a diameter of 22 cm rolls along a horizontal surface as shown without slipping at a constant acceleration. It initially (t=0) has an angular velocity of 11 rad/s and 10 seconds later has an angular velocity of 3 rad/s.
(a)What is its angular acceleration? rad/s2
(b)What is the linear (translational) displacement of the ball? m
(c)How long (from t=0) will it take to stop? sec


I got -.8 rad/s^2
15.4 m
and 13.75 seconds

Im so confused, can someone help me please????
 

Answers and Replies

  • #2
tiny-tim
Science Advisor
Homework Helper
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Welcome to PF!

Hi BlakeEdwards! Welcome to PF! :smile:

(try using the X2 tag just above the Reply box :wink:)

erm :redface: … you've used diameter instead of radius. :wink:
 

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