3. The 10-in.-radius brake drum is attached to a larger flywheel which is not shown. The total mass moment of inertia of the flywheel and drum is 16 lb · ft · s? and the coefficient of kinetic 6 in. friction between the drum and the brake shoe is В 0.40. Knowing that the initial angular velocity is 240 rpm clockwise, determine the force which must be exerted by the hydraulic cylinder if the system is to stop in 75 revolutions. 12 in. D Use work-energy equation. 10 in. +6 in.-

3. The 10-in.-radius brake drum is attached to a larger flywheel which is not shown. The total mass moment of inertia of the flywheel and drum is 16 lb · ft · s? and the coefficient of kinetic 6 in. friction between the drum and the brake shoe is В 0.40. Knowing that the initial angular velocity is 240 rpm clockwise, determine the force which must be exerted by the hydraulic cylinder if the system is to stop in 75 revolutions. 12 in. D Use work-energy equation. 10 in. +6 in.-

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

See similar textbooks

Similar questions

A uniform 144-lb cube is attached to a uniform 136-lb circular shaft as shown, and a couple M with a constant magnitude is applied to the shaft when the system is at rest. Knowing that r = 4 in., L= 12 in., and the angular velocity of the system is 960 rpm after 4 s, determine the magnitude of the couple M.
Problem 17.76 The 19.2-kg roll of paper has a radius of gyration k = 120 mm about an axis passing through point A. It is pin supported at both ends by two brackets AB as shown in (Eigure 1) The roll rests on the floor, for which the coefficient of kinetic friction is 0.2. A horizontal force F-60 N is applied to the end of the paper. Figure 400 mm 300 mm/ C <1 of 1 Part A Determine the initial angular acceleration of the roll as the paper unrolls Express your answer in radians per second squared to three significant figures. Enter positive value if the angular acceleration is clockwise and negative value if the angular acceleration is counterclockwise. VAE Ivec 3 a= 7.54 a Previous Answers Request Answer C QMNC ? Submit J * Incorrect; Try Again; 3 attempts remaining rad/s²
Dynamic Problem, reply as soon as posible. The double pulley system weighs 30 lbs. and has a 6.5-inch center radius of gyration. Cylinders A and B areconnected to the double pulley by cords that wrap around the circles whose radii are shown. Thecoefficient of kinetic friction between block B and the surface is 0.25. If the system is released from rest atposition shown, determine:A) The velocity of cylinder A just before hitting the ground.B) The total distance cylinder B travels before coming to rest.
A 5.32-kg disk A of radius 0.445 m initially rotating counter-clockwise at 436 rev/min is engaged with a 6.72-kg disk B of radius 0.275 m initially rotating clockwise at 528 rev/min, where the moment of inertia of a disk is given as I = ½ mi?. Determine their combined angular speed (in rpm) and direction of rotation after the meshing of the two disks. Remember to show clearly the equations that you use!!'
Problem # 5) A pulley having a moment of inertia of 0.191b-ft-s² is connected to two masses as shown. The masses A and B have linear acceleration of 1.85ft/s² upward and 1.11 ft/s² downward, respectively. Assuming no axle friction, determine (a) the tension forces TA and TB in the cables connecting the masses, and (b) the angular acceleration a of the pulley. Include and present the Free Body Diagram and Inertial Response Diagram as part of the solving process. Hint #1: Hint #2: use mA = 0.1553slugs, and mв = 0.3106slugs treat each body separately 6 in. B 10 lb 10 in. A 5 lb
A 240-lb block is suspended from an inextensible cable which is wrapped around a drum of 1.25-ft radius rigidly attached to a flywheel. The drum and flywheel have a combined centroidal moment of intertia of 10.5 lb-ft-s^2. At the instant shown, the velocity of the block is 6 ft/s directed downward. The bearing at A as a frictional moment of 60 lb-ft. What is the kinetic energy of the system after the block moved after 4ft? (in ft-lb)
A 197-kg flywheel is at rest when a constant 300 N·m couple is applied. After executing 560 revolutions, the flywheel reaches its rated speed of 2400 rpm. Knowing that the radius of gyration of the flywheel is 400 mm, determine the average magnitude of the couple due to kinetic friction in the bearing. N.m. The average magnitude of the couple due to kinetic friction in the bearing is [
Q2) A loaded Porter governor has four links each 200 mm long and are hinged at a distance of 40 mm from the axis of rotation. The mass of each ball is 2 kg and mass of the sleeve is 20 kg. The governor sleeve begins to rise at 300 r.p.m. when the links are at an angle of 35° to the vertical. Assuming the friction force to be constant, determine the minimum and maximum speed of rotation when the inc lination of the arms to the vertical is 40°.
The rotor of an electric motor has an angular velocity of 4500 rpm when the load and power are cut off. The 75-kg rotor, which has a centroidal radius of gyration of 200 mm, then coasts to rest. Knowing that kinetic friction results in a couple of magnitude 4.5 N m⋅ exerted on the rotor, determine the number of revolutions that the rotor executes before coming to rest. (Final answers should be in two decimal places with correct units)
Part B please
The arms of a Porter governor are 225 mm long. The upper and lower arms are pivoted to links of 35 mm and 45 mm respectively from the axis of rotation. Each ball has a mass of 4 kg and the sleeve mass is 35 kg. The force of friction on the sleeve of the mechanism is 44 N. Determine the range of speed of the governor for extreme radii of rotation of 115 mm and 145 mm.