Wednesday

April 1, 2015

April 1, 2015

Posted by **Sally** on Tuesday, July 31, 2012 at 10:33am.

- Phy 231 -
**Elena**, Tuesday, July 31, 2012 at 11:35amv= 50 km/h = 50000/3600 =13.9 m/s

If the wheel is disc, I =mR²/2;

ω = v/R.

Iω²/2 = m•R²•v²/2•2•R²= mv²/4

KE=18(mv²/2 + Iω²/2) = 18(mv²/2 + Iω²/4)=

=18•3• mv²/4=27•mv²/2

**Answer this Question**

**Related Questions**

phys - A disk rolls down a slope. It rotational axis is its center of mass. It ...

physics - A yo-yo has a rotational inertia of 810 g·cm2 and a mass of 95 g. Its ...

Physics - A wheel with radius R, mass m, and rotational inertia I rolls without...

Physics - Equate the increase in potential energy at the higher elevation, M g H...

Physics - (b) Given that Icm = ½MR2 for a uniform solid wheel, (i) show that ...

physics - An experimental flywheel, used to store energy and replace an ...

Physics - A rolling barrel with initial velocity 20 m/s encounters a hill 10m ...

Physics 121 - A solid sphere of uniform density starts from rest and rolls ...

physics - A bicycle has wheels of radius 0.3 m. Each wheel has a rotational ...

physics - A car has a flywheel ( a diks of R=0.2m and uniformly distributed mass...