A person's forearm consists of a bone (which we can model by a rigid rod) that is free to rotate around the elbow. When the forearm is held level with the elbow bent at a 90 degree angle, the bone is supported by the bicep muscles, which are attached by a tendon to the bone a few centimeters away from the axis represented by the elbow. By making measurements on your own forearm and appropriate approximations and estimations (be sure you describe them) estimate the tension force on the biceps tendon when you hold an object with a mass of 10 kg in your hand (w/ your forearm level and elbow bent at 90 degrees).