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Mira la respuestaMira la respuesta done loading Muestra el texto de la transcripción de la imagenPregunta: A person is lifting a load in shoulder abduction (Figure 1.1). The weight of the full arm (W) is 4 kg and the CM is located 20 cm (b) from the shoulder pivot. The load the subject lifts is 10 kg and is located 45 cm (c) from the pivot. i) Obtain the applied muscle force (Fm) at 5 cm (a) from the shoulder, and the direction and magnitude of the reaction force
A person is lifting a load in shoulder abduction (Figure 1.1). The weight of the full arm (W) is 4 kg and the CM is located 20 cm (b) from the shoulder pivot. The load the subject lifts is 10 kg and is located 45 cm (c) from the pivot. i) Obtain the applied muscle force (Fm) at 5 cm (a) from the shoulder, and the direction and magnitude of the reaction force (Fj) at the shoulder, if the force acts at 15 degrees from the arm axis (θ) (20 points). ii) What would be the values of the forces if the arm is lowered 20 degrees from horizontal (10 points)?
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