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Introductory Physics Homework Help
Relationship between linear and rotational kinetic energy
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[QUOTE="BrainMan, post: 4810911, member: 508011"] [h2]Homework Statement [/h2] Consider a solid disk of mass m and radius R rolling along a horizontal surface with the center of the disk moving horizontally with a speed v. The total kinetic energy of the disk is a combination of translational kinetic energy , KEt and rotational kinetic energy, KEr. Find the ration KEt/KEr [h2]Homework Equations[/h2] [h2]The Attempt at a Solution[/h2] I basically broke down the equations into their simplest forms to try to find the relationship. So E = 1/2mv^2 + 1/2IW^2 E = 1/2mv^2 + 1/2 (1/2mR^2)w^2 E = 1/2mv^2 + 1/4mR^2 * W^2 I am really not sure how to how about solving this problem. I know I could make up some imaginary numbers for the variables and just guess and check for the relationship but I would prefer to solve this algebraically. The correct answer is 2. [/QUOTE]
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Introductory Physics Homework Help
Relationship between linear and rotational kinetic energy
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