Friday
March 27, 2015

Homework Help: physics

Posted by Lindsay on Saturday, December 24, 2011 at 7:18pm.

In order to change the angular momentum of an object, it is necessary to apply
a. a net force to the object.
b. a net torque to the object.
c. a centripetal acceleration to the object.
d. both a net force and a net torque to the object.




We have three vectors, labeled A, B, and C. A points due west, B points due north, and C points due east. We donít know their relative magnitudes. We find the cross product of each of these vectors with a vector which points due south (D). Rank the three cross products ( ) from smallest to largest in terms of their vertical component, taking the sign of the component into account.
g. You cannot tell with the given information

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