Sunday

April 20, 2014

April 20, 2014

Posted by **Leah** on Friday, November 11, 2011 at 12:48am.

a grindstone for which the moment of inertia

is 0.158 kg · m2.

Find the angular speed after the grindstone

has made 18 rev.

Assume the grindstone

starts from rest.

Answer in units of rad/s

- Physics -
**Damon**, Friday, November 11, 2011 at 4:45ama = 27.2/.158 = 172 radians/second^2

18*2pi= 0 + 0t + (1/2)(172)t^2

113 = 86 t^2

t = 1.15 seconds

w = 0 + a t

w = 172*1.15 = 197 radians/second

**Related Questions**

physics - The turbine and associated rotating parts of a jet engine have a total...

physics - Three forces are applied to a box wrench. find the total torque about ...

physics - A 4.0 kg pulley of radius 0.15 m is pivoted about an axis through its ...

Physics - A uniform plank of length 5.1 m and weight 235 N rests horizontally on...

Physics, check my answer pls - 4. All of the following are true about torque ...

physics - An antique carousel that’s powered by a large electric motor undergoes...

physics - for an object in equillibrium the net torque acting on it vanishes ...

physics - A grinding wheel of radius 0.370 m rotating on a frictionless axle is ...

torque - what happens to torque where force is applied? what happens to torque ...

Physics-torques - Suppose that a meter stick is balanced at its center. A 0.27-...