Area of a sector: K = 1/2 r2q
The angular speed of a particle is q / t.
Problem: A phonograph record with diameter 12 inches turns at 33 1/3 rpm. Find the distance that a point on the rim travels in one minute.
33 1/3 = 100/3
C = 2pr = 12p
100 rev x 12p
in = 400p inches
3 min
1 rev
1 min
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