==Magnetic tape is being fed over and around the light pulleys mounted in a device. At the instantshown, the acceleration and velocity of points A and B on the tape are aд 386 m/s² and VB 6.8m/s. If r = 0.12 m and R = 0.21 m, calculate the magnitudes of up, ap, VA, aŋ, and the angularvelocity and angular acceleration of each pulley at this instant. There is no slippage between thetape and the pulleys. (vp = 6.8 m/s, ap 22.7 m/s², VA = 6.8 m/s, aŋ =221.3 m/s², wi 56.7rad/s, w2 32.4 rad/s)===PBAR

. We are given the acceleration and velocity of two points on the tape, A and B, and the radii of…

Answered: = = Magnetic tape is being fed over and…

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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Q1. Member AB is rotating (about fixed point A) with angular velocity (@ = 1 rad/sec) and angular acceleration (a = 2 rad/sec?) and driving the link CD (rotating about fixed point D at constant velocity) as shown in figure. Select five right answers. (a) Tangential Acceleration (a:) of link AB will not be zero (b) Tangential Acceleration (a) of link AB will be zero D 450mm (c) Tangential Acceleration (a,) of link CD will not be zero 200 mm 100 mm 60 H (d) Tangential Acceleration (a,) of link CD will be zero (e) All points on link CB will have same linear velocity 0 All points on link CB will have same angular velocity Formula • Tangential acceleration of a rotating link -ra • Radial (normal) acceleration of a rotating link = v³ /r= wr velocity of a rotating Ink (v) = r.w (g) Angular acceleration (a) for link CD will be zero (h) Angular acceleration (a) for link CB will not be zero Q2. Magnitude of linear velocity of any point “H" located at the half of the length of a rotating link CB…
Q1
5. The belt-driven pulley and attached disk are rotating with increasing angular velocity. At a certain instant, PA Up 15 ft/sec and aд an 188 ft/sec². If d 2 ft and R = 2.2 ft, calculate thei velocity and acceleration of point P on the belt for that instant. (up 12.5 ft/sec, ap = 11.42 ft/sec) = v, a
A block is supported by two links having 1m length. The two link have the same angular velocity ( 2 rad/s ) and angular acceleration (3 rad/s²) at a time when they make an angle of 45° with the cleaning. Find the acceleration of the block. Use vector notation W=2 m/s²
The crank link AB of the crank and slider mechanism has an angular velocity of WAB = 6 rad/s and an angular acceleration of a = 2 rad/s", both directed counterclockwise. The distances shown are hi = 6 in, h2 = 8 in and di 6 in. Also, a = 8, 6 = 15 %3D and c = 17. h2 WAB dAB What is the absolute value of the magnitude of the velocity of Point C at the given instant? vc =| in/s What is the absolute value of the linear acceleration of Point C at the given instant? in/s ас
The figure as shown below is a rigid body undergoing planar motion. The absolute tangential accelerations of the points R and S on the body are 150 mm/sec2 and 300 mm/ sec2 respectively in the directions shown. What is the angular acceleration of the rigid body? Al 10 mm 10 mm 90 mm (a) 1.66 rad/ sec2 (b) 3.33 rad/ sec2 (c) 5.00 rad/ sec2 (d) 2.50 rad/ sec2 In the mechanism ABCD shown in the given figure, the fixed link is denoted as (1), Crank AB as (2), rocker BD as (3), Swivel trunnion at C as (4). The instantaneous centre I41 is at (a) the centre of swivel trunnion. (b) the intersection of line AB and a perpendicular to BD to (c) Infinity along AC (d) Infinity perpendicular to BD. www
The disk shown in the figure rotates, at the instant shown, with a clockwise angular velocity of 40 rad/s and with a counter clockwise angular acceleration of 5 rad/s2. How long does it take before the disk comes to a temporary stop? a = 5 rad/s
It moves 4 horizontally and 6 vertically. θ2 (⁰) = 20⁰ ω2 = 75 rad/s (+)Find the speed of limbs 4 and 6 in the mechanism in the figure. Find the acceleration of the same limbs at the same position. (take the angular velocity constant)
In the mechanism shown below, link AB rotates at a constant angular velocity of 1.5 rad per sec counterclockwise. What is the acceleration of C along the channel? Assume the positive direction to be upwards and to the right. use relative motion
In the system on the picture the bigger wheel is not moving, the smaller wheel is connected to the center of the bigger wheel with the rod and it can rotate around the bigger wheel. the smaller wheel starts its movement with angular acceleration ε=10rad/s^2. find the acceleration of point B (marked in a drawing) after 1 full rotation. The radius of the bigger wheel is equal to 0,3m. The radius of the smaller wheel is equal to 0,1m.
Q2. The arm AC of the cam follower mechanism shown in the figure rotates about A at a constant angular speed of 100 rev/min. A spring keeps pin B against the contour of the cam. If the equation of lobe shape is r 110 - 40cos 20 where r is in millimeters, calculate the magnitudes of the velocity and acceleration of pin B when 0=120. Also determine the radius of curvature of the path p and the time rate of change of the speed for this instant.
The robotic arm shown below can reach horizontal distances away from its pedestal by rotating linkage LAB about point A and by rotating linkage LBc about point B. At the instant shown in the figure, use an absolute motion analysis to write a symbolic solution for the horizontal velocity and the horizontal acceleration of point C located at the end of the robotic arm. The only quantities that may appear in your symbolic solution are LAB, LBC,0AB,0 BC,WAB,WBC ,a AB and aBC - LBC B OBC LAB АВ OAB

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