Consider the portion of an excavator shown. At the instant under consideration, the hydrauliccylinder is extending at a rate of 9 in./sec, which is decreasing at the rate of 3 in./sec everysecond. Simultaneously, the cylinder is rotating about a horizontal axis through O at a constantrate of 15 deg/sec. Determine the velocity v and acceleration a of the clevis attachment at B.Determine the r and 9-components of velocity and acceleration.2.53.6A37°Answers:V, =iin./secVe =iin./secin/sec? ag =in./sec2ii

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Answered: Consider the portion of an excavator…

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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Consider the portion of an excavator shown. At the instant under consideration, the hydraulic cylinder is extending at a rate of 5 in./sec, which is decreasing at the rate of 2 in./sec every second. Simultaneously, the cylinder is rotating about a horizontal axis through O at a constant rate of 13 deg/sec. Determine the velocity v and acceleration a of the clevis attachment at B. Determine the indicated terms used in the velocity and acceleration formulas. Answers: r = __ in. θ = ___ ° r˙ = __in./sec θ˙ = ____ rad/s r¨ = ___ in./sec2 θ¨ = ____rad/s2
Consider the portion of an excavator shown. At the instant under consideration, the hydraulic cylinder is extending at a rate of 5 in./sec, which is decreasing at the rate of 2 in./sec every second. Simultaneously, the cylinder is rotating about a horizontal axis through O at a constant rate of 13 deg/sec. Determine the velocity v and acceleration a of the clevis attachment at B. Determine the r- and θ-components of velocity and acceleration. Answers: vr = in./sec vθ = in./sec ar = in./sec2 aθ = in./sec2
Consider the portion of an excavator shown. At the instant under consideration, the hydraulic cylinder is extending at a rate of 7 in./sec, which is decreasing at the rate of 3 in./sec every second. Simultaneously, the cylinder is rotating about a horizontal axis through O at a constant rate of 14 deg/sec. Determine the velocity v and acceleration a of the clevis attachment at B.
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As the hydraulic cylinder rotates around O, the exposed length l of the piston rod P is controlled by the action of oil pressure in the cylinder. If the cylinder rotates at the constant rate 60 deg/s and l is decreasing at the constant rate of 150 mm/s, calculate the acceleration of end B when l = 125 mm.
Consider the portion of an excavator shown. At the instant under consideration, the hydraulic cylinder is extending at a rate of 5 in./sec, which is decreasing at the rate of 2 in./sec every second. Simultaneously, the cylinder is rotating about a horizontal axis through O at a constant rate of 13 deg/sec. Determine the velocity v and acceleration a of the clevis attachment at B. Write the velocity and acceleration as vectors.Answers:v = ( er + eθ) in./seca = ( er + eθ) in./sec2
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If the compact disc is spinning at a constant angular rate θ˙ = 445 rev/min, determine the magnitudes of the accelerations of points A and B at the instant shown. Determine the magnitudes of the velocities of points A and B.
Q2. The peg Pis driven by the sotted link whose motion is defined by theta= 1.5t and r = 0.8theta2. Find Determine the radial and transverse components of velocity and acceleration of the peg P after 1 sec time.
Bar AB rotates uniformly about the fixed pin A with a constant angular velocity ω. Determine the velocity and acceleration of block C, at the instant Ɵ=60°.
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