Monday

January 26, 2015

January 26, 2015

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

**Answer this Question**

**Related Questions**

Physics - A constant torque of 22.9 N·m is applied to a grindstone whose moment ...

Physics - Rotational Mechanics - The combination of an applied force and a ...

Physics please check - A uniform solid disk with a mass of 32.3 kg and a radius ...

Physics - A wheel of moment of inertia 0.136 kg · m2 is spinning with an angular...

Please check solution - A uniform solid disk with a mass of 40.3 kg and a radius...

Physics - I need help with this problem. A ceiling fan is turned on and a net ...

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

Physics - A 2m radius uniform 50kg disk has an object of unknown moment of ...

Physics - A grindstone of radius 4.0m is initially spinning with an angular ...

physics - (a) Calculate the angular momentum of an ice skater spinning at 6.00 ...