The block A is subjected to a pulling force p along the cable. If the weight is 100 N and the coefficient of friction is 0.3, the value Of p to start the motion is N. 30° O 21.53 O 23.53 O27.53 O 29.53 O 25.53
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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.The square-threaded screw 0f the C-clamp has a mean diameter of 8 mm and a pitch of 1.6 mm. The coefficient of static friction between the threads is 0.2. If the torque C=1.50Nm is used to tighten the clamp, determine (a) the clamping force; and (b) the torque required to loosen the clamp.A belt drive is required to transmit 12 kW power. The velocity of the belt is 9.6 m/sec. If coefficient of friction is 0.25 and the angle of contact is 150º, determine the maximum tension is the belt.
- A pulley with a diameter of 4 in. can rotate about a fixed shaft with a diameter of 2 in. The coefficient of static friction between the pulley and shaft is 0.20. Determine; a. the smallest vertical force P required to start raising a 500-lb load. b. thesmallest vertical force P required to hold the load. c. the smallest horizontal force P required to start raising the same load.The crate has a weight of W = 350 lb, and the coefficients of static and kinetic friction are μs = 0.3 and μk = 0.2, respectively. Determine the friction force on the floor if θ = 47.4° and P = 105 lb.A)What force F is needed to get the 300kg block shown in the figure below to move to the right? (b) What is the frictional force developed between the two blocks in N? (c) What is the frictional force developed between the 300kg block and the ground surface in N? The coefficient of static friction for all surfaces is 0.3. The angle, theta=100 The force F = N The frictional force between the two blocks = The frictional force between the 300kg block and the ground=
- The frictional coefficient has a value of 0.26795, and the normal force is 20kN. Determine the angle of friction.The crate shown is held against wedge B by a spring. The spring is 92.5% of its original uncompressed length l=2.50m , and the spring constant is given as k=1350N/m . The coefficient of static friction at all contacting surfaces is μs=0.150 . The mass of the crate is m=28.0kg . The angle is θ=14.0∘ . Neglect the mass of the wedge. Assume the crate only moves in the y direction and that wedge A cannot move.(Figure 1) Part A - Determining the normal force exerted by the crate on the wedge Determine the normal force Nc that the crate exerts on the wedge when the system is at rest. Express your answer to three significant figures and include the appropriate units. Part B - Finding the smallest horizontal force P to move the crate upward Determine the magnitude of the smallest horizontal force P that is necessary to begin moving the crate upward. Express your answer to three significant figures and include the appropriate units.The coefficient of static friction under the block a and b are the same. If the block is in the verge of sliding, find the tension at each chord. Assume that the pulley is frictionless.Recall [from Physics]:?? = ???Where:?? - is the frictional force?? - is the normal force? -coefficient of static frictiona. Determine the tensile force (lb) on the cable 1.b. Determine the tensile force (lb) on the cable 2. Plsss show complete handwritten solution. Thanksss!!
- The designer of a Ski resort wishes to have a portion of a beginner’s slope on which the skier’s speed will remain fairly constant as shown in Fig. 2(a) below. Tests indicate the average static and kinetic coefficients of friction between Ski and snow to be µs=0.1 andµk=0.08. What should be the slope angle θ at the constant speed section? [5An 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.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 PLS