automobile safety test a shoulder and seat belt exerts a force of 86 0 tb directly backward and a force of 73 0 lb backward at an angle of 17 below the horizontal on a dummy If the belt holds the dummy from moving farther forward what force did the dummy exert on the belt GITTE Set up the problem by representing each force as a vector using an angle given from standard position Let A represent the 86 0 lb force and let B represent the 73 0 lb force Vector Standard position Angle A B Magnitude Ib Ib 86 0 h 73 04