Angular motion problem question

  • Thread starter Skoob
  • Start date
  • #1
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Homework Statement


A homogeneous cylinder of mass 1.20 kg and diameter 25 cm rolls down an inclined plane that makes an angle of 25 degrees with the horizontal. What is the speed of the axis of the cylinder by the time the cylinder has rolled 1.00 m down the plane?

Homework Equations




The Attempt at a Solution


So what I did was I first converted the diameter into meters. Then I divided that by 2 to give the the radius. I calculated it's moment of inertia of the cylinder, which is "1/2MR^2". I'm stuck after that.
 

Answers and Replies

  • #2
Chandra Prayaga
Science Advisor
650
149
Use conservation of energy.
1. Draw a diagram showing the situation at the beginning of the motion and at the end.
2. Write down the types of energy that the object has in each situation
3. Equate the total mechanical energy at the top to that at the bottom
 

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