SOLUTION: The pendulum of a clock swings through an angle of 2.5 radians as its tip travels through an arc of 50 centimeters. Find the lenght of the pendulum, in centimeters.

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Question 264223: The pendulum of a clock swings through an angle of 2.5 radians as its tip travels through an arc of 50 centimeters. Find the lenght of the pendulum, in centimeters.
Answer by Alan3354(69443) About Me  (Show Source):
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The pendulum of a clock swings through an angle of 2.5 radians as its tip travels through an arc of 50 centimeters. Find the lenght of the pendulum, in centimeters.
r = s/angle
r = 50/2.5 = 20 cm
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Clock pendulums swing ±8º degrees or less, which is an included angle of ~0.28 radians. Have the authors of the books ever seen a clock?