Explore BrainMass

# Rotational dynamics: Rolling of ring and disc from incline

Not what you're looking for? Search our solutions OR ask your own Custom question.

This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

A solid disk and ring of the same mass and radius start from rest at the top of an incline. both of them start from the same vertical height of 0.5m and roll down an incline.

Which of these reach the bottom first? Give reason.

Find the speed of the disk when it reaches the bottom of the incline.

https://brainmass.com/physics/acceleration/rotational-dynamics-rolling-ring-disc-incline-58937

#### Solution Preview

A solid disk and ring of the same mass and radius start from rest at the top of an incline. both of them start from the same vertical height of 0.5m and roll down an incline.
Which of these reach the bottom first? Give reason.
My quess was that the solid disk would reach the bottom first because it is more arrow dynamic(??). could you tell me if that is right.
Find the speed of the disk when it reaches the bottom of the incline.
what equation do I use and how do I set it up.