3/103 The spring is unstretched when x = 0. If the body moves from the initial position x₁ = 100 mm to the final position x₂ = 200 mm, (a) determine the work done by the spring on the body and (b) determine the work done on the body by its weight. Ans. (a) U1-2 = -60 J, (b) U1-2 = 2.35 J 4 kN/m WW W 7 kg 20°
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- The single-plate clutch transmits the torque C from the input shaft on the left to the output shaft on the right. Compression springs between the clutch housing and the pressure plate provide the necessary pressure on the friction surface. The splines prevent the clutch plate from rotating relative to the output shaft. If Ri=4 in. and R0=9 in., determine the total force that must be applied to the pressure plate by the springs if the clutch is to transmit a torque of C=56lbft when it is new.The system is made up of a bar, supported by a pin at point A and by a smooth collar at point B (the collar slides on the ABG bar). The collar is pinned to bar BDE, and bar BDE is supported by a pin at D and a cable at end E. Determine the innner charges un a cut that passes trough the point G(normal force and cutting force, and flexing moment With T=26 lb, a=4 in, b=9 inThe mine car and its contents have a total mass of 7.1 Mg and a center of gravity at G . If the coefficient of static friction between the wheels and the tracks is μs = 0.34 when the wheels are locked, find the following: 1 The normal force acting on the front wheels at B is Blank 1 kN when the brakes at both A and B are locked. 2 The normal force acting on the rear wheels at A is Blank 2 kN when the brakes at both A and B are locked. 3 The friction force acting on the front wheels at B is Blank 3 kN when the brakes at both A and B are locked. 4 The friction force acting on the rear wheels at A is Blank 4 kN when the brakes at both A and B are locked. 5 With the given information above, does the car move? Answer with Yes or No only. Blank 5