Sunday

January 25, 2015

January 25, 2015

Posted by **Anonymous** on Friday, March 18, 2011 at 6:46pm.

(a) Earth's orbital motion around the sun.

(b) Earth's rotation on its axis.

Can someone please help me with this question? Thanks

- Physics -
**drwls**, Saturday, March 19, 2011 at 2:07pm(a) (earth's velocity in orbit)x(distance from sun)

(b) This requires the moment of inertia about its axis, I. Assume mass is uniformly distributed and use

I = (2/5)M*R^2

which applied to solid spheres.

The moment of inertia of rotation is

I*w

where w is the angular velocity of rotation. You can get that from the 24 hour period of a day.

**Answer this Question**

**Related Questions**

Physics - Compute the angular momentum of the earth arising from the following ...

Physics please HELP - What is the ratio of the spin angular momentum of the ...

physics - What is the ratio of the spin angular momentum of the earth and its ...

heeeeeeeeeeeelp physics - Estimate the time difference between the longest day ...

physics - please help - Assume the earth is a uniform sphere and that its path ...

Phyics Toughest question on earth - Estimate the time difference between the ...

heeeeeeeeeeeelp physics vrey tough - Estimate the time difference between the ...

Physics - What is the orbital velocity of the Earth around the Sun, assuming the...

earth - The Earth orbits the Sun once every 365 days. The distance between the ...

Physics - Assume that the earth is a uniform sphere and that its path around the...