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Science · Physics
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5. -2 points My Notes Ask Your Teacher An extended arm holds up a book. The arm itself has weight and feels an upward force from the biceps muscle. Find the force exerted by the biceps muscle when the angle is 90°. (Assume that ri 3.0 cm, rz 14 cm, rs 36 cm 2.6 kg, and mb 3.6 kg. Enter the magnitude.) How does this force compare to the weight of the book? Triceps muscle Biceps muscle PHYSICS mb CG
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