An 8.00-kg wedge A is placed on a rough inclined surface and is observed to slide down. The coefficients of sliding and non- sliding friction between the wedge and the incline are 0.250 and 0.400, respectively. A Hx = 0.250 Hs =0.400 300
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- A constant force Fa pushes a 22.5-kg box across a rough horizontal surface. The magnitude of Fa is 185 N and the force is inclined at an angle of θ = 30.0° below the horizontal. The coefficient of kinetic friction between the box and the surface is μk = 0.500. What is the magnitude of the box's acceleration?A 20kg block is placed on a 30 degree ramp and an acceleration of 4.91m/s^2 is predicted if friction between the block and ramp is ignored. The actual measured acceleration is 3.49m/s^2. Find the Coefficient of friction between the block and the ramp.Antman must supply a force of 8.25x10-3N to a small computer chip to lower it at a constant velocity over a distance of 11.5cm down a slope into a waiting circuit board. If the computer chip has a mass of 5.50g and the slope makes an angle of 23.0° with respect to the horizontal. What is the coefficient of kinetic friction between the computer chip and the slope?
- A rope exerts a force of 50 N on a box to keep it stationary. If the box is on a plane inclined 25° from the horizontal and the coefficient of static friction is 0.29, calculate the normal force exerted on the box.A block with a mass of 2.0 kg is released from rest and slides down a long, smooth ramp. The incline of the ramp is 41.0 degrees, and the coefficient of kinetic friction is ?=0.259 How far will the block travel in 1.001.00 s, assuming it does not reach the end of the ramp?A 6 kg block is sliding down on a rough inclined surface that makes θ = 30° with respect to the horizontal. The kinetic frictional coefficient between the block and the surface is 0.19. Find the acceleration a of the block.
- A 26.8 kg box sits on a ramp at an angle of 13° above the horizontal. If the coefficient of static friction between the box on the ramp is 0.215, what minimum applied force is required to keep the box at rest?A block of mass 1.45 kg is resting on a board with friction.The board is inclined until the mass just starts to slide. If the angle of the incline when the mass just barely begins to slide is 17.5 degrees,what is the coefficient of static friction between the block and the board?Question 8. A 5.41-kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.369. Determine the kinetic frictional force that acts on the box when the elevator is (a) stationary, (b) accelerating upward with an acceleration whose magnitude is 2.64 m/s², and (c) accelerating downward with an acceleration whose magnitude is 2.64 m/s².Ans: 19.56 N; 24.83 N; 14.29 N
- A 10.1 kg box is released on a 49.9° incline and accelerates down the incline at 0.07 m/s². What is the coefficient of kinetic friction between the two surfaces?A 9.61kg box on a ramp with an incline of 26.36° slips, giving it an acceleration of 0.31m/s2. What is the coefficient of kinetic friction between the box and the ramp?