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Statement of a problem № 3212

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A light rigid rod of length L has a mass m attached to its end, forming a simple pendulum. The pendulum is put in the horizontal position and released from rest. Show that the tension in the suspension will be equal to the magnitude of weight at an angle T = cos^(-1)(1/3) with the vertical.

Solution:
A light rigid rod of length L has a mass m attached to its end, forming a simple

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