Exercise • With what force magnitude T must the person pull on the cable in order to cause the scale A to read 2000 N? The weights of the pulleys and cables are negligible. State any assumptions. . the sliding hanger shown is used.Exercise • To facilitate shifting the forces at A and B when position of a lifting hook the hook supports a 300when it is not under kg mass. Compute the . The projections at A and B engage the flanges of a box beam when a load is supported. load. and the hook projects through a horizontal slot in the beam. . Exercise • Three cables are joined at the junction ring C. . Determine the tensions in cables AC and BC caused by the weight of the 30-kg cylinder. . Exercise • Determine the reactions at A and E if P = 500 N. . What is the maximum value which P may have for static equilibrium? Neglect the weight of the structure compared with the applied loads. . If a load whose center of mass is x = 400 mm behind the rear axle is added to the truck. .Exercise • The indicated location of the center of mass of the 1600-kg pickup truck is for the unladen condition. determine the mass mL for which the normal forces under the front and rear wheels are equal. . What corresponding force F must be .Exercise • The elements of an exerted on the handle on-off mechanism for at A? a table lamp are shown in the figure. The electrical switch S requires a 4-N force in order to depress it. . What force F will cause the unit to tip clockwise if wheel A is against an obstruction? .Exercise • A person attempts to move a 20-kg shop vacuum by pulling on the hose as indicated. . You may assume that part of CD of the dolly jack is horizontal.Exercise • Estimate the force F required to lift the rear tires of the race car off the ground. The driver applies the brakes during the jacking. State any additional assumptions. . The mass of the car and the driver combined is 700 kg with mass center at G. . The collar at A can provide support in the horizontal direction only. Calculate the magnitude of the force supported by the pin connection at O when the 3-kN load is applied. . with a combined center of mass at G.Exercise • The member OBC and sheave at C together have a mass of 500 kg. . . determine the normal forces NB and NC under each pair of wheels B and C.Exercise • The man pushes the lawn mower at a steady speed with a force P which is parallel to the incline. If 15. Neglect friction. Compare with the normal forces for the conditions of 0 and P 0. The mass of the mower with attached grass bag is 50 kg with mass center at G.