Physics 101 Introduction to Mechanics 

April 17 Angular Momentum  



A child
swings a 0.1 kg ball on a string around in a horizontal circle of radius
2.0 m once every 0.63 s. The ball's angular momentum around the child
is
a. 3000 kgm^{2}/s You are standing 30 m due east of a 50
kg person who is running at a speed of 2.0 m/s due north. What is
the magnitude of that person's angular momentum around you?
a. 3000 kgm^{2}/s Estimate the angular momentum associated
with the Earth's rotation about its axis.
Estimate the angular momentum associated
with the Earth's orbital motion about the sun.


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