The uniform panel door weighs 62 lb and is prevented from opening by the strut C, which is a light two-force member whose upper end is secured under the door knob and whose lower end is attached to a rubber cup which does not slip on the floor. Of the door hinges A and B, only B can support force in the vertical z-direction. If the force, P, is known, which of the following statements are true? (mark all that apply):

Mechanics of Materials (MindTap Course List)
9th Edition
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Barry J. Goodno, James M. Gere
Chapter1: Tension, Compression, And Shear
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The uniform panel door weighs 62 lb and is prevented from opening by the strut C, which is a light
two-force member whose upper end is secured under the door knob and whose lower end is
attached to a rubber cup which does not slip on the floor. Of the door hinges A and B, only B can
support force in the vertical z-direction.
If the force, P, is known, which of the following statements are true? (mark all that apply):
39
45
36
24
Transcribed Image Text:The uniform panel door weighs 62 lb and is prevented from opening by the strut C, which is a light two-force member whose upper end is secured under the door knob and whose lower end is attached to a rubber cup which does not slip on the floor. Of the door hinges A and B, only B can support force in the vertical z-direction. If the force, P, is known, which of the following statements are true? (mark all that apply): 39 45 36 24
The force in the strut can be solved for in one equation. Specifically the sum of the moments about point B
and around the z axis would work
O The force in the strut can be solved for in one equation. Specifically the sum of the moments about point B
and around the y axis would work
O On the FBD, the strut is represented as a force witha known direction (the direction of the strut), similar to a
tension force from a rope, but in the opposite direction
O The reactions at A include forces in the x, y, and z directions
O The force in the strut can be solved for in one equation. Specifically the sum of the moments about point B
and around the x axis would work
O The reactions at B included forces in the x, y, and z directions
Transcribed Image Text:The force in the strut can be solved for in one equation. Specifically the sum of the moments about point B and around the z axis would work O The force in the strut can be solved for in one equation. Specifically the sum of the moments about point B and around the y axis would work O On the FBD, the strut is represented as a force witha known direction (the direction of the strut), similar to a tension force from a rope, but in the opposite direction O The reactions at A include forces in the x, y, and z directions O The force in the strut can be solved for in one equation. Specifically the sum of the moments about point B and around the x axis would work O The reactions at B included forces in the x, y, and z directions
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