A 20-lb homogeneous box has tipped and is resting against a 40- Ib homogeneous box (See Figure). The coefficient of friction between box A and the floor is 0.7; between box B and the floor, 0.4. Treat the contact surface between the two boxes as smooth and determine if the boxes are in equilibrium. 24 in. 24 in. 第一 24 in. 12 in 30

Structural Analysis
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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20-lb homogeneous box has tipped and is resting against a 40-lb homogeneous box. The coefficient of friction between box A and the floor is 0.7; between box B and the floor, 0.4. Treat the contact surface between the two boxes as smooth and determine if the boxes are in equilibrium.
Question Bank - Friction
A 20-lb homogeneous box has tipped and is resting against a 40-
Ib homogeneous box (See Figure). The coefficient of friction
between box A and the floor is 0.7; between box B and the floor,
0.4. Treat the contact surface between the two boxes as smooth
and determine if the boxes are in equilibrium.
24 in.
24 in.
24 in.
s第一
12 in
30
Techmology Druen by lanovation
reuALABANG PRUD TEOH
Are the boxes in equilibrium? Yes or No? [ Select ]
Prove your answer by stating friction force fa and fg.
fA = ? [Select]
Answer in Ibs
fB = ?
[ Select ]
Answer in Ibs
Transcribed Image Text:Question Bank - Friction A 20-lb homogeneous box has tipped and is resting against a 40- Ib homogeneous box (See Figure). The coefficient of friction between box A and the floor is 0.7; between box B and the floor, 0.4. Treat the contact surface between the two boxes as smooth and determine if the boxes are in equilibrium. 24 in. 24 in. 24 in. s第一 12 in 30 Techmology Druen by lanovation reuALABANG PRUD TEOH Are the boxes in equilibrium? Yes or No? [ Select ] Prove your answer by stating friction force fa and fg. fA = ? [Select] Answer in Ibs fB = ? [ Select ] Answer in Ibs
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