Steve is holding a weight in his hand as shown and his forearm can be modeled using a rigid beam with the weight acting at point H (W2 = 350 N). Steve’s elbow acts as a hin_ge joint at point E. The forearm has a weight W1 = 225 N and length L = 38 cm, and the center of gravity is at Point G. The beam is supported by two passive muscles (M1 and M2) attached at points A and B, respectively, with the assumption that they only act in the vertical direction. M1 has an elastic modulus E1 = 300 MPa and cross-sectional area A1 = 130 mm^2, and M2 has an elastic modulus of E2 = 300 MPa and A2 = 100 mm^2 . The undeformed lengths of both muscles are h = 20 cm. The distance between Points E and A is d1 = 4 cm and the distance between points E and B is d2 = 30 cm. a) Calculate the tension in each muscle (M1 and M2), and reaction force (Ry) at Point E. b) Calculate the tensile stress (σ1 and σ2) in each muscle.
