1. Find the least value of P required to cause the system of blacks shown to have impending motion to the left. Also find the normal forces on each block. The coefficient of friction under each block is 0.20 and angle alpha is 25 degrees. 30 kN 10 kN 30
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Q: 3. Find the least value of P required to cause the system of blocks shown to have impending motion…
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- A uniform plank is supported by a fixed support at A and a drum at B that rotates clockwise. The coefficients of static and kinetic friction for the two points of contact are as shown. Determine whether the plank moves from the position shown if (a) the plank is placed in position before the drum is set in motion; and (b) the plank is first placed on the support at A and then lowered onto the drum, which is already rotating.The block of weight W is pulled by the force P inclined at the angle to the horizontal. Find the smallest force P and the corresponding angle that would cause impending sliding of the block. The angle of static friction between the block and the ground is s.The brake pads at C and D are pressed against the cylinder by the spring BF. The coefficient of static friction between each pad and the cylinder is 0.15. Find the smallest tension in the spring that would prevent the cylinder from rotating when the clockwise couple M=2200lbin. is applied. Neglect the weights of the members.
- The coeffient of static friction between the uniform bar AB of weight W and the ground is 0.45. Find the smallest angle and the corresponding force P that would initiate simultaneous tipping and sliding of the bar.The 2225 N block shown is in contact with 45° incline. The coefficient of static friction is 0.25. Compute the value of the horizontal force P necessary to a. just start the block up the incline b. just prevent motion down the incline c. If P = 1780 N, what is the amount and direction of the friction force?estion 6 The crate has a weight of 490 lb and a center of gravitY at G rests on the floor for which the coefficient of static friction is equal to 0.3. if the force P=200 lb is applied as shown in the figure below, The force of friction developed between the crate and the ground is. yet aered ered out of L00 Flar -2 ft 2 ft- 3 4 ft 3 ft Figure 1
- 1.The figure shows 3 blocks. Block C hangs from a rope which passes through a fixed cylinder and is attached to block B. Find the maximum mass of block C so that block B does not move to the right. Take into account that there are frictional forces at all points of contact. Consider the given values of the masses and , the coefficient of static friction between surfaces µ1 and the coefficient of friction static between the cylinder and the uC chord. Here are the values: ma= 72 kg mb= 62 kg u1= 0,47 uC=0,375 Find the Jeast value of P that will just start the system of blocks shown moving to the left. The coefficient of friction under each block is 0,25. 300 N 100 N 30°Blocks A and B have a mass MA and MB, respectively. If the coefficient of static friction between A and B and between B and Cis ps and between the ropes and the pegs D and E ps, determine the smallest force F needed to cause motion of block B . Units Used: kN =103 N Given: ?=45deg s =0.25 MA =100 kg ps = 0.5 MB =150 kg P=30N g=9.81m/s2
- A 200 lb block is in contact with a plane inclined at 30 degrees to the horizontal. A force P, parallel to and acting up the plane, is applied to the body. If the coefficient of static friction is 0.20, find: a. the value of P to just cause the motion to impend up the plane b. the value of P just to prevent motion down the plane c. the magnitude and direction of the friction force F if P= 80 lbsA car with a four-wheel drive weighs 3000 lb and has a wheelbase of 10 ft. The e.g. is 3 ft above the pavement and 4 ft ahead of the rear wheels. Compute the active force acting at the rear wheels when the car accelerates at 1/3 g ft per sec^2? Asume the coefficient of friction is equal at all four wheels.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!!