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- Two identical chairs, each weighing 14 lb, 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. Determine the smallest force P that would cause sliding.A block of mass 14 kg is resting on a table is pulled by a force of 100 N. The coefficient of friction between table and block is .34. Calculate the acceleration of the block.Weights of blocks x, y and z are 8 lb, 12 lb and 80 lb respectively. Between all contact surfaces, the coefficient of static friction is 0.40 and that of kinetic friction is 0.30. What vertical force F must be applied to block x, so that block z will start moving upward?
- A 100kg block slid down from a 30° incline. It traveled, from rest, down to 10 meters along the incline. If it took the block to travel that far in 1s, determine the reverse effective force if coefficient of friction is 0.2KINDLY ANSWER WITH COMPLETE SOLUTION PLSA pile-driver hammer has a mass of 300 kg and is to be raised 16 m in 4 sec. The total friction on the guides is constant at 400 N. What constant pull must be exerted on the cable?Two blocks having the weights and position shown, rest on a frame which rotates about its vertical axis at a constant speed. The coefficient of friction between the blocks and the frame is 0.02 neglecting the weight and friction of the pulley, at what speed in RPM will the blocks start to slide? What is the tension in the cord at this instant.?
- A large shipping crate is at rest on the horizontal floor of a warehouse. The coefficient of static friction between the crate and the floor is μs = 0.500; the coefficient of kinetic friction is μk = 0.300. Assume that the estimation of the weight of the heaviest crate you could start sliding by pushing on it horizontally is about 100 lb. a) Based on this estimate, what is the magnitude of the maximum force you can apply? b) If you continue to push on the crate with constants force equal to the force calculated in part a) use the impulse-momentum theorem to calculate how long you must push on the crate to give it a speed of 8.0 m/s. Don't forget to take into account the kinetic friction force.A crate has a mass of 120kg and the coefficient of static and kinetic friction is 0.60 and 0.50, respectively. The crate starts from rest and the motor exerts a tension T= 1220 + 200t (N). If the elevation of the dock is 30 degrees from the horizontal, What is the velocity of the crate after 1sec? Compute the power transmitted after 1sec. Provide FBD. Thank you.For the system shown, the masses of A and B are 55kg and 135kg, respectively. the coefficient of static friction between block B and surface C is 0.12 and the coefficient of static friction between blocks A and B is 0.10. the coefficient of friction between the rope and the pulley is 0.10. a. What is the tension force in the rope connected to block B if the system is in equillibrium? b. What is the magnitude of the friction force between block B and the horizontal surface C if the system is in equillibrium? c.What is the maximum mass that can be suspended as shown and still maintain equillibrium.
- A horizontal force is exerted on a 150 lb chair at rest. The coefficient of static friction between the chair and the floor is 0.55. Determine the maximum horizontal force that can be applied to the chair before it moves.Q: Block(A) of weight (100kN) is tied to block (B) of unknown weight (Ws) through a flexible cable passing over a smooth pulley .The coefficient of friction for block (A) is (0.3) and for block (B) is (0.2).Find the range of the weight of block (B) to remain in static equilibrium. Smooth pulleyFor the system shown, the masses of A and B are 55kg and 135kg, respectively. the coefficient of static friction between block B and surface C is 0.12 and the coefficient of static friction between blocks A and B is 0.10. the coefficient of friction between the rope and the pulley is 0.10. What is the tension force in the rope connected to block B if the system is in equillibrium? What is the magnitude of the friction force between block B and the horizontal surface C if the system is in equillibrium? What is the maximum mass that can be suspended as shown and still maintain equillibrium.