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Unformatted text preview: The dot product is one way of multiplying two vectors. Another way is the cross product, whose magnitude is defined by the relation sin ) ( AB B A mag = and whose direction is given by a righthand rule. Indicate whether the cross product of the two vectors points into the page, out of the page, or is zero. out zero out in 5 = A 3 = B = 30 if B and A of product cross the of direction and magnitude the Find 5 . 7 ) 30 sin( 5 3 ) sin( ) ( = = = AB B A mag direction is out of the page The angular momentum of a particle of mass m about a given point 0 is defined by v m r p r L = = r p m When a body moves with a constant velocity its angular momentum is necessarily zero, since angular momentum only applies to rotational motion and a body moving in a straight line does not rotate. (T) True (F) False (Z) Jeff (C13T.3) You are standing 30 m due east of a 50kg person who is running at a speed of 2.0 m/s due west. What is the magnitude of that persons angular momentum about you?...
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This note was uploaded on 04/17/2008 for the course PHYS 120 taught by Professor Decarlo during the Spring '08 term at DePauw.
 Spring '08
 DeCarlo
 Physics

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