Rotation 1: Skill Set

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Rotation 1 Skill Set
Memorize and correctly apply relation between
linear and angular motion. (Check units to be
sure!) Understand moment of inertia. Memorize
it for a hoop. Judge what mass distribution gives
a big I or a small I. Use conservation of
energy with rotational K to solve problems like
falling massespulleys, or objects doing
loop-the-loop Apply the parallel axis theorem
appropriately, when it is valid. (Axes parallel,
one through cm.)
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A hunter leaves camp, hikes 10 mi due East, and
then 10 mi due North. She shoots a bear.She
then hikes back to camp, 10 mi due South.What
color was the bear?
A Brown B Black C White D There is no
possible bear with the problem as written
Polar Bear!
Rotations are like translations on a sphere. They
are well-behaved vectors for small displacements
/ angles.
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Torque caused by F3 is not 0 about point A
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Multiply (component of force that is
perpendicular to r) x r. Multiply total force
by (component of r that is perpendicular to F.)
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