The 7-kg slender bar AB is released from rest in the position shown. Neglect friction in all contact surfaces. The acceleration of the mass center G immediately after it was released from rest in terms of the angular acceleration of the bar a AB is (3a ABi – 2a AB). B B Ng 6 m 6 m
The 7-kg slender bar AB is released from rest in the position shown. Neglect friction in all contact surfaces. The acceleration of the mass center G immediately after it was released from rest in terms of the angular acceleration of the bar a AB is (3a ABi – 2a AB). B B Ng 6 m 6 m
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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Please answer nos. 2, 4, & 5.
Transcribed Image Text:The 7-kg slender bar AB is released from rest in the position shown. Neglect friction in all contact surfaces. The acceleration of the mass center G immediately
after it was released from rest in terms of the angular acceleration of the bar a AB is (3a ABî – 2a AB).
B
Ng
6 m
6 m
A
A
4 m
4 m
NA
2. Which of the following equations of motion is CORRECT and can be used to solve for the angular acceleration of rod AB?
> Mc: 2.0W = (7)(3.0)(aAB)(3.0) + (7)(2.0)(aAB)(2.0) + (IAB)(CAB)
A.
ссw +
Σ
Mc: -2.0W = -(7)(3.0)(ªAB)(2.0) + (7)(2.0)(aAB)(3.0) + (IAB)(ªAB)
В.
ccw +
: > Mc:-2.0W = -(7)(3.0)(aAB)(3.0) + (7)(2.0)(aAB)(2.0) + (IAB)(aAB)
C.
ссw +
ccw + > Mc: 2.0W = (7)(3.0)(aAB)(2.0) + (7)(2.0)(ªAB)(3.0) + (IaB)(ªaB)
D.
4. Which of the following best approximates the magnitude of the reaction at A?
33.8 N
52.8 N
71.2 N
23.8 N
5. Which of the following gives the magnitude and direction of the acceleration of end A in m/s^2?
5.30 m/s2 t
4.53 m/s2 1
4.53 m/s2 t
5.30 m/s2 1
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