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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
7 years ago

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scott
an extra "cm" in there? ... or something strange ...
7 years ago
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.
7 years ago

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