4. A garage door (8 ft by 10 ft) weighs 200-lbs is pulled with a constant 25-lb horizontal force to open it as shown. Assume the door rollers (A & B) are frictionless and the door does not rotate or lift off rollers A & B. G is the center of mass of the door. Determine: a. Reactions forces at each roller support (A & B) b. The constant acceleration of the door. c. The time for the door to move 10 feet. Assume it starts from rest. Draw FBD and write governing equations. Show all work.

4. A garage door (8 ft by 10 ft) weighs 200-lbs is pulled with a constant 25-lb horizontal force to open it as shown. Assume the door rollers (A & B) are frictionless and the door does not rotate or lift off rollers A & B. G is the center of mass of the door. Determine: a. Reactions forces at each roller support (A & B) b. The constant acceleration of the door. c. The time for the door to move 10 feet. Assume it starts from rest. Draw FBD and write governing equations. Show all work.

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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