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physics

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An athlete is supporting a weight of 200N in his hand with his forearm at a
right angle to his biceps. Assuming his biceps are in the vertical plane, the
axis of rotation of the forearm is 3 cm from the elbow and 25 cm from the
centre of gravity of the weight, calculate the force that must be produced by
the biceps to hold the weight. [8 marks]

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