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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16-58. If the block at C is moving downward at 4 ft/s, determine the angular velocity of bar AB at the instant shown. 3 ft vc = 4 ft/s 30 WAB [B 2 ft
If the flywheel is rotating with an angular velocity of = 6 rad/s, determine the angular velocity of rod BC at the instant shown 13 m 1.5m A-6 rad/s it com L
16-99. The crankshaft AB rotates at wAB = 50 rad/s about the fixed axis through point A, and the disk at C is held fixed in its support at E. Determine the angular velocity of rod CD at the instant shown. 75 mm 75 mm 40 mm, 300 mm 60° AB = 50 rad/s F100 mm-
*16-4. The disk is originally rotating at wn = 12 rad/s. If it is subjected to a constant angular acceleration of a = 20 rad/s', determine the magnitudes of the velocity and the n and t components of acceleration of point B when the disk undergoes 2 revolutions. wo = 12 rad/s 0.4 m -0.5 m-A
F16-21. The gear rolls on the fixed rack B. At the instant shown, the center 0 of the gear moves with a velocity of vo = 6 m/s and acceleration of ao = 3 m/s?. Determine the angular acceleration of the gear and acceleration of point A at this instant. 0.6 m 0.3 m do = 3 m/s? O vo = 6 m/s лллллллл. B.
16-75. If link AB is rotating at wAB = 3 rad/s, determine the angular velocity of link CD at the instant shown. -6 in.- WAB 30° 8 in. Фср D 4 in.
20-11. The electric fan is mounted on a swivel support such that the fan rotates about the z axis at a constant rate of w, = 1 rad/s and the fan blade is spinning at a constant rate w, = 60 rad/s. If at the instant o = 45°, d = 2 rad/s for the motion, determine the angular velocity and the angular acceleration of the blade.
16–85. If link CD has an angular velocity of wcD = 6 rad/s, determine the velocity of point E on link BC and the angular velocity of link AB at the instant shown. %3D 0.3 m 0.3 m B 0.6 m @CD= 6 rad/s 30 Probs. 16-84/85
16-113. The reel of rope has the angular motion shown. Determine the velocity and acceleration of point A at the instant shown. a = 8 rad/s? w = 3 rad/s B. 100 mm
16-146. A ride in an amusement park consists of a rotating arm AB that has an angular acceleration of æAB = 1 rad/s? when wAB = 2 rad/s at the instant shown. Also at this instant the car mounted at the end of the arm has an angular acceleration of a = (-0,6k} rad/s² and angular velocity of w' = {-0.5k} rad/s, measured relative to the arm. Determine the velocity and acceleration of the passenger Cat this instant. = 0.5 rad/s 10 ft 60 2 ft |aAв 2 гad /s 30°
16–35. If the shaft and plate rotates with a constant angular velocity of w = 14 rad/s, determine the velocity and acceleration of point C located on the corner of the plate at the instant shown. Express the result in Cartesian vector form. 0,6 m 0.2 m 0.4 m 0.3 m 0.3 m 0.4 m
20-15. At the instant shown, the tower crane rotates about the z axis with an angular velocity w = 0.25 rad/s, which is increasing at 0.6 rad/s. The boom OA rotates downward with an angular velocity wz = 0.4 rad/s, which is increasing at 0.8 rad/s. Determine the velocity and acceleration of point A located at the end of the boom at this instant. w = 0.25 rad/s 40 ft 30 x 'an = 0.4 rad/s

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