20-26. Rod AB is attached to collars at its ends by using ball-and-socket joints. If collar A moves along the fixed rod at va =5m/s, determine the angular velocity of the rod and the velocityof collar B at the instant shown. Assume that the rod's angularvelocity is directed perpendicular to the axis of the rod.m-VA =5 m/s2 mx-

Write the expression of the velocity at point A in vector form. Write the expression of the…

Answered: 20-26. Rod AB is attached to collars at…

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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19-26 The double pulley consists of two wheels which are attached to one another and turn at the same rate. The pulley has a mass of 15 kg and a radius of gyration of = 110 mm. if the block at A has a mass of 40 kg and the container at B has a mass of 85 kg, including its contents, determine the speed of the container when t = 3s after it is released from rest.
The flywheel rotates with an angular speed of w = 8 rad/s and an angular velocity = 16 rad/s2. Determine the tangential velocity at point B.
16-89 If rod CD is rotating with an angular velocity Wcd = 4 rad/s, determine the angular velocities of rods AB and CB at the instant shown.
If the hub gear H and ring gear R have angular velocities Wh = 5rad/s and Wr = 20rad/s, respectively. Determine the angular velocity
18-9 The pendulum consists of a 10 kg uniform disk and a 3 kg uniform slender rod. If it is released from rest in the position shown, determine its angular from velocity when it rotates clock wise .
18-37 The spool has a mass of 20 kg and a radius of gyration of = 160 mm. if the 15 kg block A is released from rest, determine the velocity of the block when it descends 600 mm.
19-31 The 75 kg gymnast lets go of the horizontal bar in a fully stretched position A, rotating with an angular velocity of = 3 rad/s. estimate his angular velocity when he assumes a tucked position B. assume the gymnast at position A and B as a uniform slender rod and a uniform circular disk, respectively.
The 2-m-long bar is confined to move in the horizontal and vertical slots A and B. If the velocity of the slider block at A is 6 m/s to the right, determine the bar's angular velocity and the velocity of block B at the instant theta= 60°.
The cord, which is wrapped around the disk, is given an acceleration of a=(12t)m/s2, where t is in seconds A) Starting from rest, determine the angular displacement of the disk, measured clockwise, when t = 3 s B) Starting from rest, determine the angular velocity of the disk, measured clockwise, when t = 3 s C) Starting from rest, determine the angular acceleration of the disk, measured clockwise, when t = 3 s .
15-23. The motor exerts a force F on the 40-kg crate a shown in the graph. Determine the speed of the crate when t= 3 s and when t = 6 s. When t = 0, the rate is moving downward at 10 m/s
If roller A moves to the right with a constant velocity of vA = 3 m/s, determine the angular velocity of the link and the velocity of roller B at the instant Ɵ = 30°.
19-35 The 10 kg bullet having of 800 m/s is fired into the edge of the 5 kg disk as shown. Determine the angular velocity of the disk just after the bullet becomes embedded into its edge. Also, calculate the angle the disk will swing when it stops. The disk is originally at rest. Neglect the mass of the rod AB.

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