Posted by **Pat** on Monday, October 22, 2012 at 4:03pm.

Compute the angular momentum of the earth arising from the following motions.

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

(b) Earth's rotation on its axis.

- Physics -
**Pat**, Monday, October 22, 2012 at 4:08pm
also include the units please. im not sure if i have the right answer because the site tells me my units are wrong, so for all i know i have the right answer but i cant tell

- Physics -
**Elena**, Monday, October 22, 2012 at 4:53pm
(a) L1 = M•v•R =

Earth’s mass is M = 5.97•10^24 kg,

R= 1.5•10^11 m (Earth-Sun)

v=ω•R=2•π•n•R

n=1 rev/year =1/365•24•3600 rev/s

L1 = M•v•R = M•2πn•R²= …(kg•m²/s)

(b)

Earth’s radius is r = 6.378•10^6 m.

n= 1rev/day =1/24•3600 rev/s

L2 = I•ω1= (2•M•r²/5) •2•π•n•r= …(kg•m²/s)

- Physics -
**clouds**, Monday, October 22, 2012 at 10:21pm
ok that's correct

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