Posted by **devin** on Saturday, November 28, 2009 at 2:34pm.

estimate the rotational kinetic energy of earth, assuming it to be a solid sphere of uniform density

- physics -
**MathMate**, Saturday, November 28, 2009 at 5:24pm
The rotational kinetic energy of a spinning sphere is given by

K = (1/2)Iω²

where

K=kinetic energy due to rotation

I=moment of inertia about the rotation axis

ω = angular velocity

The moment of inertia of a sphere spinning about an axis passing through its centre, I is

I=(2/5)mr²

Where m=mass of the sphere,

and r=radius of sphere.

Calculate K.

## Answer This Question

## Related Questions

- college physics - Estimate the rotational kinetic energy of Earth, assuming it ...
- Physics - A solid sphere of uniform density starts from rest and rolls without ...
- Physics (Rotational Kinetic Energy) - Hello, The question is: A solid ball rolls...
- Physics - Calculate the kinetic energy that the earth has because of its ...
- Physics 121 - A solid sphere of uniform density starts from rest and rolls ...
- PHYSICS 1 - When a pitcher throws a curve ball, the ball is given a fairly rapid...
- Physics - A solid sphere of uniform density starts from rest and rolls without ...
- Physics - A solid sphere of uniform density starts from rest and rolls without ...
- Physics- drwls please help - (a) Calculate the kinetic energy that the earth has...
- Physics - A uniform solid sphere of mass 4kg and diameter 20cm initally at rest...

More Related Questions