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 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 10 deg/sec. Determine the velocity v and acceleration a of the clevis attachment at B.

Answer the blank questions only

Determine the indicated terms used in the velocity and acceleration formulas.
3.0'
3.8'
A
36°
Answers:
r =
81.6
in.
0 =
36
=
7
in./sec
=
56.55
rad/s
-3
in./sec2 =
rad/s?

Determine the r- and 0-components of velocity and acceleration.
3.0'
3.8'
A
36°
MONOKONON
Answers:
V, =
i
in./sec
Ve =
i
in./sec
in./sec2 ag =
in./sec?
ar =
i
i

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