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4) An athlete is doing curls. Her biceps muscle is attached to the radius via the distal biceps tendon, and it is the contraction of the biceps that allows her to lift the weight. Her forearm is 40 cm in length, and the tendon is Distal attached to the radius at a distance of 3.0 em from the elbow joint. biceps tendon a. If the dumbbell has a mass m = 10 kg, what is the tension in the distal biceps tendon when the elbow is bent at 90 biceps humerus degrees? (You may neglect the mass of her forearm.) b. As it turns out, she has a partial rupture in her distal biceps tendon (her trainer told her not to do curls, but she didn't E Radius and ulna listen). The tensile strength of tendon tissue is about 9000 N / cm?. So, the thicker the tendon (the greater the cross-sectional area), the stronger it is. If her distal biceps tendon has a cross-sectional area of only 0.20 cm? at the location of the rupture, will this exercise tear her tendon