17-25. The door has a weight of 200 lb and a center of uity at G. Determine the constant force F that must be oplied to the door to push it open 12 ft to the right in 5 s, starting from rest. Also, find the vertical reactions at the rollers A and B. -6 ft- -6 ft A 12 ft 5 ft 3 ft

17-25. The door has a weight of 200 lb and a center of uity at G. Determine the constant force F that must be oplied to the door to push it open 12 ft to the right in 5 s, starting from rest. Also, find the vertical reactions at the rollers A and B. -6 ft- -6 ft A 12 ft 5 ft 3 ft

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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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.

Question

This is a dynamics problem.

Answers: F = 5.96 lb,

N_B = 99 lb,

N_A = 101 lb

17-25. The door has a weight of 200 lb and a center of
uity at G. Determine the constant force F that must be
oplied to the door to push it open 12 ft to the right in 5 s,
starting from rest. Also, find the vertical reactions at the
rollers A and B.
-6 ft-
-6 ft
A
12 ft
5 ft
3 ft

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