Thursday
April 17, 2014

Homework Help: Physics

Posted by Kayla on Saturday, November 19, 2011 at 12:20pm.

Two disks of identical mass but different radii (r and 2r) are spinning on frictionless bearings at the same angular speed ω0, but in opposite directions. The two disks are brought slowly together. The resulting frictional force between the surfaces eventually brings them to a common angular velocity.


(a) What is the magnitude of that final angular velocity in terms of ω0? (Use the following as necessary: ω0.)

(b) What is the change in rotational kinetic energy of the system? (Use the following as necessary: K as the initial kinetic energy.)
Explain.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

statistics - Media Disk, Inc. duplicates over a million 3.5 floppy disks each ...
physics - The speed of a moving bullet can be determined by allowing the bullet ...
Physics - Satellite Motion - Calculate the acceleration of two different ...
Physics - The weight of an object is the same on two different planets. The mass...
physics - There are two spinning disks A and B arranged so that they initially ...
Physics - Two charged particles initially are traveling in the positive x ...
physics - The speed of a moving bullet can be determined by allowing the bullet ...
Physics - The weight of an object is the same on two different planets. The ...
finite math - a box contains 40 computer disks, 5 are defective. Three disks are...
physics - The weight of an object is the same on two different planets. The mass...

Search
Members