12.14 Blocks A and B weight 120 N and 200 N, respectively. Force P acts parallel to the plane, which is inclined relative to the horizontal plane at the angle of 30°. The coefficient of friction between the blocks A and B is #₁ 0.7, and between block B and plane C #2: = 0.2. Investigate the equilibrium state of the system as function of the magnitude of force P? - B 30° с
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- The leather rein used to fasten the horse to the hitching rail weighs 3.5 oz per foot. The coefficient of static friction between the rail and the rein is 0.6. If a 34-lb force acting on the bridle is sufficient to restrain the horse, determine the smallest safe length L for the free end of the rein.2. The 100 – Ib force acts as shown on a 300 - Ib block placed on an inclined plane. The coefficients of friction between the block and the plane are us = 0.25 and Hk = 0.20. Determine whether the block is in equilibrium, and find the value of the friction for the friction force. 300 Ib 100 lb10. A block of weight W1=100N rests on an inclined plane and another weight W2 is attached to the first weight througha string as shown in fig below. If the coefficient of friction between the block and plane is 0.3, determine the maximum and minimum values of W2 so that equilibrium can exist (24A force of 500 N is applied to the end of the cord that is attached to block A of Fig. 2000 N, and block B weighs 4000 N. The coefficient of friction between the blocks is 0.30, and the coefficient of Block A weighs friction between B and the floor is 0.20. Determine If the system would be in equilibrium for P = 2500 N. 500 N 30° B Pthe system blocks shown below is in equilibrium, the weight of block A is 10 kN and for block B is 35 kN . The coefficient of friction between A and surface is 0.2 and between two block A and B is 0.15. Answer :the following P=40KN The value of friction force between * block A and its surface is 4.0 kN 5.5 kN 6.2 kN O Non above-mentioned97.l.l? 9:1Y the system blocks shown below is in equilibrium, the weight of block A is 10 kN and for block B is 35 kN. The coefficient of friction between A and surface is 0.2 and between two block :A and B is 0.15. Answer the following P=40KN الخيار رقم 1 5 نقاط The direction of friction force between two blocks which * effect on block A is in First Quarter O Second Quarter Third Quarter Fourth Quarter هذا السؤال مطلوبTwo identical chairs, each weighing 7 kg, are stacked as shown. The center of gravity of each chair is denoted by G. The coefficient of static friction is 0.2 at B (the contact point between the chairs) and 0.35 at A, C, and D. If a force 10 N is applied at P, determine whether the chair can be at rest in the position shown without sliding. Justify your answer. 0.3 m→0.3 m→ G. • G 0.2 m 0.6 m 0.5m Figure 4Q4.) An 8-foot-long uniform slender rod is connected to a 20-lb. block by a cord and pulley system as shown where LAO = 6 ft. The coefficient of static friction between the block and the surface is 0.6. Determine the range of rod weights for which the system remains in equilibrium. Assume friction is negligible between the pulleys and the cord. Consider both slipping and tipping. 30° 30° 6 ft 2.5 ft/ B 2 ft 40⁰ 3.5 ft1. The center of gravity of the 60 kN block is at G. The static coefficient of friction between the block and the inclined surface is 0.30. Determine; a. the frictional force between the block and the inclined plane. b. the smallest force P for which the block will move up the inclined plane without tipping. c. the largest distance h for which the block will move up the inclined plane without tipping. G P 1.0m 0.80m 20° 0.50m 0.50mA 20 kg block is held in place on an incline plane as shown by a rope that passesover a frictionless pulley at B and then over a fixed cylinder at C where thecoefficient between the rope and the fixed cylinder is 0.2. Given an angle ofincline, A = 25°, if a force of P = 200 V is applied to the end of the rope,(a) Will the block move if the coefficient of static friction between the block and theinclined surface is M, = 0.56?(b)If impending motion exists, will the block tip or slip?1. Draw a free body diagram for the block on the ramp that is attached to the string. There is no friction between the block and the ramp. The angle of the ramp is 35 degrees with respect to the horizontal, and the angle of the string is 45 degrees with respect to the horizontal. The block is at rest, and it has a mass of 10 kg. The acceleration due to gravity for this experiment is 9.8 m/s?. 450 35° 2. Decompose all of the forces into x and y forces 3. Sum the x forces and set them equal to what they should be set equal to. Sum the y forces and set THEM equal to what they should be set equal to.20 cm The homogeneous block weights 250 N. Determine the value of P for which the block 30 cm in equilibrium, the coefficient of friction is 0.3 between the plane and the block. 15 cm 10 N 10 cmSEE MORE QUESTIONS