What force F on the rope is required to start lifting body A (20ON) given that thi to the wedge (body B. SON) is 100N Friction ic
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- Box A weighs 1000N and has a height of H1=3m and width W1=2m. Box B weighs 800N. the static friction coefficient between the boxes is uA=0.7 and the static friction coefficient between box B and the ramp is uB=0.5. Find the max allowable angle for the following instances where no motion occurs, box A and B remain stationary. 1) Box A slides, Box B remains stationary 2) Box A tips, Box B remains stationary 3) Box B slides, Box A remains stationary on block BRod AB leans against the wall with a coefficient of static friction, μSB = 0.2. The contact surface at A is smooth (μSA = 0). Find the minimum force P necessary to prevent rod AB from sliding, given:WRod = 40 lbs, L1 = 7 ft, θ = 42 °.A 150 lb man can climb up15 ft on a 20 ft ladder before it slips. What must the coefficient of friction be if the ladder is arranged so that its base makes an angle of 50 ̊ with the ground? Assume the ladder to be uniform and weighing 100 lb.
- The weight of the motorcycle is 151 kg and the weight of the driver is 64 kg. Dimensions: l1 = 0,31 m and l2 = 0,23 m Determine the required frictional force.PROBLEM: To prevent a box from sliding down an inclined plane, student A pushes on the box in the direction parallel to the incline, just hard enough to hold the box stationary. In an identical situation, student B pushes on the box horizontally. If the weight of the box w= 20.0 N, the angle made by the incline with the horizontal θ=25o, and the coefficient of static friction µs=0.16, who has the easier job?An acrobat weighing 150 KN supports himself by wrapping a rope around one leg . From his leg there hangs 5 m of rope which weighs 0.40 KN/m. What is the minimum coefficient of friction between his leg and the rope? Neglect his pull on the rope. a. µ = 0.786 b. µ = 0.688 c. µ = 0.695
- If the coefficient of static friction between Wedge A and Crate B is 0.32 and between other contacting surfaces is 0.10, determine the minimum force P to raise crate B if the weights of A and B are WA=1670 N WB=2170 Nhttps://www.bartleby.com/questions-and-answers/if-the-coefficient-of-static-friction-between-wedge-a-and-crate-b-is-0.32-and-between-other-contacti/17427fa7-e42b-483b-bb40-15d4d6337be5If P = 200 N, determine the friction developed between the 50-kg crate and the ground. The coefficient of static friction between the crate and the ground is ??=0.3.An open belt connects two flat pulleys. The pulley diameters are 300 mm and 450 mm and the corresponding angles of lap are 160° and 210°. The smaller pulley runs at 200 r.p.m. The coefficient of friction between the belt and pulley is 0.25. It is found that the belt is on the point of slipping when 3 kW is transmitted. To increase the power transmitted two alternatives are suggested, namely (i) increasing the initial tension by 10%, and (ii) increasing the coefficient of friction by 10% by the application of a suitable dressing to the belt. Which of these two methods would be more effective? Find the percentage increase in power possible in each case.
- load of Ft = 700 N comes to the free wheel of a car. The coefficient of friction between road and tire is µT = 0.8. Wheel radius is twice the disc friction radius (Rt = 2 Rs), µ = 0.35 between pad and disc and allowable pressure p = 0.5 N/mm2 Determine the pad sizesThe motorcycle weighs 151 kg and the driver weighs 64 kg. Dimension l1 = 0,31 m ja l2 = 0,23 m Determine the required coefficient of frictionIn the given figure, W= 200kg. Assume that the coefficient of friction between surfaces is 0.40. Which of the following most nearly gives the required force P to raise the block?