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What is the length of a pendulum when it swings through an angle of 0.9 radians its tip travels a distance of 18cm?
Wiki User
∙ 7y ago
The length of an arc, of radius L (which is the length of the pendulum) and angle Φ is LΦ cm.
So L*0.9 = 18 ie L = 20 cm
Wiki User
∙ 7y ago
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