The horizontal force P = 50 N is applied to theupper block with the system initially stationary.The block masses are ma = 10 kg and mg = 5 kg.Determine if and where slippage occurs for the fol-lowing conditions on the coefficients of static fric-tion: (a) µ = 0.40, µ2 = 0.50 and (b) µz = 0.30, µ2 =0.60. Assume that the coefficients of kinetic friction%3Dare 75 percent of the static values.P15 AH1

Answered: Image /qna-images/answer/ab524090-906f-45eb-8752-e735bacfeb1c.jpg

Answered: The horizontal force P 50 N is applied…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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The 70.62-kg climber in the figure is supported in the “chimney” by the friction forces exerted on his shoes and back. The static coefficients of friction between his shoes and the wall, and between his back and the wall, are 0.85 and 0.68, respectively. What is the minimum normal force (in N) he must exert? Assume the walls are vertical and that the static friction forces are both at their maximum. Ignore his grip on the rope.
The crate shown is held against wedge B by a spring. The spring is 93.5% of its original uncompressed length 1 = 2.25 m, and the spring constant is given as k = 1650 N/m. The coefficient of static friction at all contacting surfaces is µ = 0.150. The mass of the crate is m = 24.0 kg. The angle is 0 = 10.0°. Neglect the mass of the wedge. Assume the crate only moves in the y direction and that wedge A cannot move. (Figure 1) Figure B A 1 of 1 L Part A - Determining the normal force exerted by the crate on the wedge Determine the normal force No 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. ► View Available Hint(s) Nc = Submit O P = Submit μA Value Part B - Finding the smallest horizontal force P to move the crate upward Units 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…
A single disc clutch with both sides effective is required for a vehicle. The power for initial estimation of the clutch is 100 kW at 4000 rpm. Determine the radial dimensions (inner and outer radius) and the actuating force (W). Base the design on the uniform wear assumption. Assume maximum pressure (pmax) as 1.6 MN/m2 and ?2?1= 1√2where ‘r2’ and ‘r1’ represent inner and outer radius of the friction surface. Take µ = 0.35. Find also the minimum pressure (pmin).
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An object with weight W is dragged along a horizontal plane by a force acting along a rope attached to the object. If the rope makes an angle 6 with the plane, then the magnitude of the force is μW F = µ sin(8) + cos(0) Where u is a positive constant called the coefficient of friction and where 0 < 0
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.
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An ideal cord (no mass and no elongation under load) is wrapped around a disc of radius r (r=50 cm, J=0,4 kgm²). The free end of the cord is connected to the mass of m=3kg. The disc is pin jointed and no friction is arisen at the pin. The cord does not slide on the disc and the system is at rest initially. When the system is released the mass, due to the gravity, starts a to move with acceleration a. Find the acceleration of the mass, and the change in the linear momentum of the mass as well as in the angular momentum of the disc during 3 seconds. g=9.81 m/s²
A damping mechanism for closing a door allows it to close on its own, as shown in the figure. The shock consists of a spring to return attached to an oil-filled damping piston. When the spring pulls the piston to the right, the teeth of the piston bar engage in a sprocket, which rotates and causes the door to close. Should the system be sub-meame, critically cushioned or over-cushioned for best performance (where the door closes quickly without hitting the frame)? Explain your answer.
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