Posted by **Andrea** on Wednesday, November 7, 2007 at 5:09pm.

"the total angular momentum of an object changes when a net external force acts on the system." This statement is:

a)always true

b) never true

c) sometime true, it depends on the force's direction

d)sometime true, it depends on the force's point of application

I can cancel out b). I think the correct answer is a) it doesn't depend on the force's direction or point of application does it?

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