In the figure below, the weight of the block is 300 kg and the angle of internal friction is 24.2 degrees.
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- (II) A 25.0-kg box is released on a 27° incline and accelerates down the incline 0.30 m/s2at Find the friction force impeding its motion. What is the coefficient of kinetic friction?A 75 N force, inclined at an angle a = 45° as shown in Figure 3.5, pulls a 100 N block. The coefficient of static friction between the block and the floor is 1.3, and the coefficient of kinetic friction is 1.1. Determine the friction force between the block and the floor.The 10 N cylinder moves in a friction tube. Spring constants are k1 = 150 N / m and k2 = 200 N / m. When the system is at rest, d = 0.5 m. The system rotates around a fixed z-axis. In the case where d = 0.12 m, what is the coefficient of friction for the cylinder to have a constant velocity of 9.825 m / s?
- A horizontal force P acts on the top of the 30 N block having a width of 25 cm and a height of 50 cm. If the coefficient of friction between the block and the plane is 0.33. a. What is the value of P for motion to impend? b. Is the motion will impend due to overturning? Show your solution.A pulley 1 m in diameter rotating at 300 r.p.m is brought to rest in 80 s. By constant force of friction on its shft. How many revolutions does it moves?consider the mass and pulley system in the attached file. mass m1 = 29 kg and mass m2 = 12kg. the angle of the inclined plane is given and the coefficient of kinetic friction between mass m2 and the inclined plane is uk = 0.12. assume the pulleys are massless and frictionless when mass m2 moves a distance 4.94 m up the ramp, how far downward does mass m1 move? d= ?
- In the figure above, blocks A and B have 50 and 10 kg respectively. It is given that thecoefficients of friction between all surfaces of contact are static friction=0.4 and kinetic friction=0.3.a) If P=0, determine the acceleration of B and the tension in the chord?b) If P=10, determine the acceleration of B and the tension in the chord?c) If P=100, determine the acceleration of B and the tension in the chord?A 30g wood block is firmly attached to a horizontal spring. The coefficient of friction between the block and the floor is 0.4. A force of 20N compresses the spring 20cm and then released. a. What is the spring constant? b. How far beyond the equilibrium position will it stretch on the first swing? c. How many seconds will it take the block to return to its initial position?A dictionary is pulled to the right at constant velocity by a 10 N force acting 30° upward above the horizontal. The coefficient of kinetic friction between the book and the horizontal surface is 0.5. What is the weight of the book?
- In figure 2 show below, the body reaches a velocity of 12 m/ sec during traveling 30 m starting from rest moving with constant acceleration. Find the coefficient of friction between the body and ground? P =300 N , W = 200 NConsider the figure shown in Figure E5.33. You are lowering two boxes, one on top of the other, down a ramp by pulling on a rope parallel to the surface of the ramp. Both blocks move with constant velocity of 15.0 [m/s]. The coefficient of kinetic friction between the ramp and the lower box is 0.444 and the coefficient of static friction between the two boxes is 0.800. d. What is the magnitude of the applied force? e. Determine the angle at which the top block will start to slide down the bottom block.You pull on a large box using a rope as in Fig. 5.21a, except the rope is at an angle of 15.0° below the horizontal. The weight of the box is 325 N, and the coefficient of kinetic friction between the box and the floor is 0.250. (a) What must be the tension in the rope to make the box move at a constant velocity? (b) What is the normal force that the floor exerts on the box?