1) 1.000 2) 3) 4) 3.000 1.500 .500-一- 1.000 .750 .500 1.000 1.000 2.000-

P4-1. Draw the free-body diagram of object. 200 N/m в -2 m

*3-72. Determine the components of reaction acting at the smooth journal bearings A, B, and C. 450 N 0,6 m 300 N m 0.4 m 0.8 m 0.4 m

A woman is holding a 3.7-kg sphere in her hand with the entire arm held horizontally as shown in the figure. A tensile force in the deltoid muscle prevents the arm from rotating about the shoulder joint O; this force acts at the 21° angle shown. Determine the x- component of the force reaction at the shoulder joint O. The mass of the upper arm is my = 1.9 kg, the mass of the lower arm is m₁ = 1.1 kg, and the mass of the hand is my = 0.4 kg; all the corresponding weights act at the locations shown in the figure. Calculate your answer with one decimal figure accuracy. g = 9.81 m/s². Deltoid muscle FD 21° 125 mm 130 mm WU 412 mm- y 1 I L- 635 mm YW₂ Ws WH