Physics 133
Spring Quarter 2004
8 April 2004
Email the quiz back to me at aubrecht@mps.ohio-state.edu.
Put your name and email address at the top of the quiz.
The quiz is due before class today, 8 April 2004.
A solid uniform sphere has a mass of 4.00 kg and a radius of 0.50 m. It rolls without slipping with a speed of 0.400 m/s to the right.
a. Calculate the total angular momentum of this sphere about point A, and point B, which is 1.00 m above point A. (5)
b. What stays the same in your calculation and what changes? (2)
c. Is there a point about which the total angular momentum is zero? If so, where is this point? (3)
take me to the journal assignments
Gordon’s solution will appear here
a. The angular momentum is given as L = r
x p. The directions are different, but rperpendicular is the same, 0.50 m. The momentum is 1.600 kg m/s, to the right.b. The direction is different, the magnitude is the same.
c. Yes, along p. When two vectors are parallel or antiparallel, the cross product is zero.
aubrecht@mps.ohio-state.edu [latest revision, 11 April 2004]