Posted by **Mary** on Thursday, November 5, 2009 at 12:56pm.

A 2.0 kg disc rolls without slipping on a horizontal surface, so that its center of mass has a constant linear speed of 6.0 m/s. What is the total kinetic energy of the disc?

i know that k= 0.5mv2 + 0.5 I w2

K=1/2 mv2 (1+(I/mr2)

but i am still getting he wrong answer because i convert I to miri2 so therefore it cancels with the denominator and k = 1/2mv2 but that is wrong. i am stuck

## Answer this Question

## Related Questions

- physics - A hollow sphere of radius 0.30 m, with rotational inertia I = 0.072 kg...
- Physics - A hollow sphere of radius 0.30 m, with rotational inertia I = 0.080 kg...
- Physics- PLEASE HELP - A 10.0 kg cylinder rolls without slipping on a rough ...
- physics - A 10.0-kg cylinder rolls without slipping on a rough surface. At the ...
- physics - a bowling ball has a mass of 8kg. if it rolls down the alley, without ...
- physics - A solid sphere of mass 0.604 kg rolls without slipping along a ...
- physics - A 9.0 kg cylinder rolls without slipping on a rough surface. At an ...
- PHYSICS - A hollow tube (I = MR2) rolls without slipping along the surface. The ...
- physics help please 1!! - A 1.27 kg hoop with a radius of 10.0 cm rolls without ...
- physics - A ball with radius 12cm rolls on a level surface, and the ...