7-43. The driver of the sports car applies his rear brakesand causes the tires to slip. If the normal force on each reartire is 1800 N and the coefficient of kinetic friction betweenthe tires and the pavement is - 0.5, determine theaverage shear stress developed by the friction force on thetires. Assume the rubber of the tires is flexible and each tireis filled with an air pressure of 22s KPa.1800 N

Answered: Image /qna-images/answer/daafea07-d222-4515-8659-c830d51a70ad.jpg

Answered: 7-43. The driver of the sports car…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A collar bearing C is supported by a fixed annular plate. The axial load on the shaft is F = 600 N, and the coefficient of kinetic friction between the collar and the plate is μ = 0.3. The area of contact has an inside diameter of D₁ = 60 mm, and the outside diameter is D₂ = 180 mm. Determine the torque required to rotate the shaft at a constant rate. C F M C F D₁ - D₂ M
1) Determine the average braking torque to be applied to stop the vehicle of mass 1.5 ton is movingdown the hill at a slope of 1:7 at 60 kmph and the vehicle is to be stopped at a distance of 50 m.Take the diameter of the vehicle tyre as 500 mm. If the friction energy is momentarily stored in a20 kg cast iron brake drum, what is the average temperature rise of the drum? The specific heat forcast iron may be taken as 520 J/kg ˚C.
The 553-N force is applied to the 96-kg block, which is stationary before the force is applied. Determine the magnitude and direction of the friction force F exerted by the horizontal surface on the block. The force is positive if to the right, negative if to the left. H = 0.71 = 0.51 Answer: F = i 35° N P = = 553 N
5) The crate at a 10° incline has a mass of 350 kg and is subjected to a towing force P acting at a 20° angle with the horizontal. If the coefficient of static friction is µs = 0.5, determine the magnitude of P needed start impending motion. Given: M = 350 kg = 20 deg = 10 deg Us = 0.5 m g = 9.81
The fork lift has a weight of 2,400 lb and a center of gravity at G. If the rear wheels are powered, whereas the front wheels are free to roll, determine the maximum number of 300-lb crates the fork lift can push forward. The coefficient of static friction between the wheels and the ground is μw = 0.4 and between the each crate and the ground μc = 0.35. 2.5 ft 1.25 ft -3.50 ft- XIXIX
8-131. A large stone having a mass of 500 kg is moved along the incline using a series of 150-mm-diameter rollers for which the coefficient of rolling resistance is 3 mm at the ground and 4 mm at the bottom surface of the stone. Determine the force T that will cause the stone to descend the plane at a constant speed. Problem 8-131 T 30%

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