4. Rotational Motion, Statics . The bones of the forearm are hinged to the humerus (your "funny bone") at the elbow. The biceps muscle connects to the bones of the forearm about 2 cm beyond the elbow joint. Assume that the forearm is 2 kg in mass and 0.4 m long and that the hand holds a mass A of 1.5 kg. The humerus bone and biceps muscle are vertical and your forearm is horizontal, and the arm and mass are in static equilibrium. The diagram above shows all the forces acting on the forearm. Fbone 0.41 Fmuscle mfag mag 0.02 (a) What is the magnitude and direction of the force exerted by the biceps muscle on the forearm? (The forearm is the horizontal bone connecting your hand and elbow) (b) What is the magnitude and direction of the force exerted by the humerus bone on the forearm bone at the elbow joint? (The humerus bone is the vertical bone connecting your elbow and shoulder)

4. Rotational Motion, Statics . The bones of the forearm are hinged to the humerus (your "funny bone") at the elbow. The biceps muscle connects to the bones of the forearm about 2 cm beyond the elbow joint. Assume that the forearm is 2 kg in mass and 0.4 m long and that the hand holds a mass A of 1.5 kg. The humerus bone and biceps muscle are vertical and your forearm is horizontal, and the arm and mass are in static equilibrium. The diagram above shows all the forces acting on the forearm. Fbone 0.41 Fmuscle mfag mag 0.02 (a) What is the magnitude and direction of the force exerted by the biceps muscle on the forearm? (The forearm is the horizontal bone connecting your hand and elbow) (b) What is the magnitude and direction of the force exerted by the humerus bone on the forearm bone at the elbow joint? (The humerus bone is the vertical bone connecting your elbow and shoulder)

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter11: Angular Momentum

Section: Chapter Questions

Problem 55P: A diver off the high board imparts an initial rotation with his body fully extended before going...

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