Problem 3.1.5 mBPROBLEM 16.121End A of the 6-kg uniform rod AB rests on the inclined surface, while end B isattached to a collar of negligible mass which can slide along the vertical rodshown. Knowing that the rod is released from rest when = 35° and neglecting theeffect of friction, determine immediately after release (a) the angular accelerationof the rod, (b) the reaction at B.25°

Answered: Problem 3. 1.5 m B PROBLEM 16.121 End A…

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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The uniform rod AB of weight W is released from rest when β = 70°. Assuming that the friction force is zero between end A and the surface, determine immediately after release (a) the angular acceleration of the rod, (b) the acceleration of the mass center of the rod, (c) the reaction at A.
The double pulley shown has a weight of 32.5 lb and a centroidal radius of gyration of 6.0 in. Cylinder A (35.0 lb) and block B (18 lb) are attached to cords that wrap around pulleys in the manner shown. The coefficient of kinetic friction between block B and the surface is 0.25. Knowing that the system is released from rest at the position shown (h = 3 ft), determine the total distance that block B moves before coming to rest. 6 in. A h 10 in. B
A 300 X 400 mm rectangular plate of mass 30 kg is suspended from two pins A and B. If pin B is suddenly removed, determine (a) the angular acceleration of the plate, (b) the components of the reaction at pin A immediately after pin B has been removed.
The rotor of an electric motor has an angular velocity of 3570 rpm when the load and power are cut off. The 65-kg rotor, which has a centroidal radius of gyration of 175mm, until it reaches the maximum speed of 5250 rpm. Knowing that the 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 achieving its maximum speed and the time it took. (The final answer should be in two decimal places with correct units)
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The double pulley shown has a mass of 15 kg and a centroidal radius of gyration of 160 mm. Cylinder A and block B are attached to cords that are wrapped on the pulleys as shown. The coefficient of kinetic friction between block and the surface is 0.2. Knowing that the system is at rest in the position shown when a constant force P = 200 N is applied to cylinder A , determine (a ) the velocity of cylinder A as it strikes the ground, (b ) the total distance that block B moves before coming to rest.
. 16.23 A 20-lb uniform disk is placed in contact with an inclined surface and a constant 7.5 lb ft couple M is applied as shown. The weight of the link AB is negligible. Knowing that the coefficient of kinetic friction at D is 0.4, de- termine (a) the angular acceleration of the disk, (b) the force in the link AB. 9 in Fig. P16.23 and P16.24 D
The rotor of an electric motor has an angular velocity of 3600 rpm when the load and power are cut off. The 121-lb rotor, which has a centroidal radius of gyration of 9 in., then coasts to rest. Knowing that kinetic friction results in a couple of magnitude 2.5 lb-ft exerted on the rotor, determine the number of revolutions that the rotor executes before coming to rest. The number of revolutions that the rotor executes before coming to rest is
It takes 10 min for a 2.4-Mg flywheel to coast to rest from an angular velocity of 300 rpm. Knowing that the radius of gyration of the flywheel is 1 m, determine the average magnitude of the couple due to kinetic friction in the bearing.

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