Asked by Glory

A stone whirled at the end of a rope 30cm long, makes 10cm complete revolutions in 2seconds.Find A. The anngular velocity in radians per second B. Linear speed
Answered by scott
an extra "cm" in there? ... or something strange ...
Answered by Henry
A. 10rev/2s * 6.28rad/rev = 31.4 rad/s.

B. Circumference = 2pi*r = 6.28 * 30cm = 188.4 cm.
Speed = 188.4cm/rev * 10rev/2s = 942cm/s = 9.42 m/s.
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