Long Answer #1:

v P n A The diving board shown in the figure below has a mass 3 of 28 kg and its center of mass is at the board's eometrical center. gFigure 1) Determine the forces that support posts 1 and 2 (separated by 1.4 m) exert on the board when a 60-kg person stands on the 7 end of the board 2.6 m from support post 2. Use positive values for the upward forces and negative values for the downward forces. Express your answers in newtons separated by a comma. Figure 1 of 1 Next > V Part A A woman lifts a 3.6-kg barbell in each hand with her arm in a horizontal position at the side of her body and holds it there for 3 s (see the figure below). (Figure 1) What force does the deltoid muscle in her shoulder exert on the humerus bone while holding the barbell? The deltoid attaches 13 cm from the shoulder joint and makes a 130 angle with the humerus. The barbell in her hand is 0.55 m from the shoulder joint, and the center of mass of her 4.0-kg arm is 0.24 m from the joint. Express your answer with the appropriate units. ? FD on H = Value Units Submit Request Answer Deltoid muscle 13 Humerus