Thursday

July 24, 2014

July 24, 2014

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

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

- college physics -
**drwls**, Thursday, November 5, 2009 at 2:05pmI for a solid disc is (1/2) m r^2

Try it with that.

If you use I = m r^2 (which would be correct for a hoop), you would get

total KE = mv^2, not(1/2) m v^2

**Related Questions**

Physics - A bowling ball of mass M and radius R is thrown along a level surface ...

Physics - A bowling ball of mass M and radius R is thrown along a level surface ...

PHYSICS - A spherically symmetric object with radius of .7m and mass of 1.6kg ...

Physics - A uniform solid sphere rolls down an incline without slipping. If the ...

physics - A solid sphere of mass 0.604 kg rolls without slipping along a ...

physics - 1.A cylinder rolls without slipping on a horizontal plane and then up ...

physics - A 9.0 kg cylinder rolls without slipping on a rough surface. At an ...

Physics - A sphere of radius r starts from rest and rolls without slipping along...

Physics Classical Mechanics - A hollow cylinder of outer radius R and mass M ...

physics - A hollow sphere of radius 0.30 m, with rotational inertia I = 0.072 kg...