Determine the force P for impending sliding motion of the wedge to the left if the angle offriction is: =16°for all sliding surfaces
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Determine the force P for impending sliding motion of the wedge to the left if the angle offriction is: =16°for all sliding surfaces
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- If the angle a = 30°, what is the magnitude of the force P required for tipping to impend, assuming that there is no slipping?0:45] am- Google Chrome du/mod/quiz/attempt.php?attempt=2340155&cmid=742781 P 250 mm 400 mm Time left 0:28:25 A = The following figure shows a spool that has a mass of 130 kg and a radius of gyration kg 0.3 m. If the coefficients of static and kinetic friction at A are μ, 0.86 and 0.81, respectively, and if you know that P 25000N, determine the following: a) Draw free body diagram. b) the angular acceleration of the spool. c) the acceleration of the center of mass of the spool G. d) the normal force at point A. e) the friction force at A. = Q Search % 5 6 7 8 9 00The man pushes on the roller with force P through a handle that connects to the central axle of the roller. If the coefficient of static friction between the 43-lb roller and the floor is Hs = 0.21, and the force Pis maximum so that the roller is about to slip, determine the angular acceleration of the roller (in rad/s?). Assume the roller to be a uniform cylinder. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point, and proper unit. Take g = 32.2 ft/s?. 1.5 ft 30°
- The 20-lb block has friction coefficients of μ = 0.4 and = 0.35, with the inclined surface. Find a. the angle where the 10-lb block begins to slide b. the acceleration of the block at the angle where it first slides c. the acceleration of the block at an angle 10° past the angle in b. If you use cartesian coordinates with x-along the slope, the problem is easier. B AThe figure shows a spool and a vertical force of P = 250 N is applied to the cable. Determine the following: a) The acceleration of G, b) The angular acceleration of the spóol, and c) The Friction force. where the coefficients of static and kinetic friction between the 400mm of 200mm rail and the spool are u, = 0.25 and u = 0.2, respectively. The mass of the spool is 150 kg. The radius of gyration of the spool is kg = 250 mm (about its center of mass G). The Friction force (N) = Choose... + The acceleration of G (m/s2) = %3D Choose... + The angular acceleration of the spool (rad/s2): Choose...The uniform rod has a mass of 10 kg and rests on the inside the smooth ring at B and on the ground at A as shown in Figure Q3. Calculate the friction of static friction between the rod and the ground if the rod is on the verge of slipping. 0.5 m 0.2 m 30 A Figure Q3
- The force P applied to the brake handle enables the band brake to reduce the angular speed of a rotating drum. If the tensile strength of the band is 3800 lb, find the maximum safe value of P and the corresponding braking torque acting on the drum. Assume that the drum is rotating clockwise.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.O Week6 Friction_21-22.pdf ds/Week6_Friction_21-22.pdf 4. The mine car and its contents have a total mass of 6000kg and a centre of gravity at G. If the coefficient of static friction 10 kN Doo→ between the wheels and the 0.9 m • G tracks is u = 0.4 when the wheels are locked, find the normal force acting on the front wheels at B and the rear /0.15 m A 0.6 m 1.5 m- wheels at A when the brakes at both A and B are locked. Does the car move? [Ans. NA = 16.5 kN, Ng =42.3 kN, the car does not move] ily TWO WAY POWER 09889 NO MODE SETUP
- In Fig. 5-14, the two boxes have identical masses of 40 kg. Both experience a sliding friction force with u 0.15. Find the acceleration of the boxes and the tension in the tie cord. 08T 30 30 0.Sme Fig. 5-14 Note: Draw the free-body diagram for objects A and B.A 200-pound cube cargo of about 50 centimeters on the side. The static coefficient is 0.4 and the dynamic is 0.2. Calculate the maximum acceleration of the car that keeps the box from moving.The uniform concrete block in (Figure 1) has a weight of 300 lb. The coefficients of static friction are μA = 0.2₁ μB = 0.3, and between the concrete block and the floor, μ = 0.4. Figure 5 ft -1 ft- B M 1.5 ft A 1 of 1 Part A Determine the smallest couple moment that can be applied to the 180-1b wheel that will cause impending motion. Express your answer to three significant figures and include the appropriate units. M = Submit μA Value Provide Feedback Request Answer Units ?