(4) Replace the three forces acting on the frame by a resultant force and a resultant moment at point B. Use the geometric method to determine the moment about B, and point D is the midpoint of bar AB. Ans: R=127+8-16k kips, MB=801 +84 +72k kip-ft 8 kips 16 kips A 14' D 12 kips 12' B

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(4) Replace the three forces acting on the frame by
a resultant force and a resultant moment at point B.
Use the geometric method to determine the moment
about B, and point D is the midpoint of bar AB.
Ans: R=127+8-16k kips,
MB=801 +84 +72k kip-ft
8 kips
16 kips
A
14'
D
12 kips
12'
B
Transcribed Image Text:(4) Replace the three forces acting on the frame by a resultant force and a resultant moment at point B. Use the geometric method to determine the moment about B, and point D is the midpoint of bar AB. Ans: R=127+8-16k kips, MB=801 +84 +72k kip-ft 8 kips 16 kips A 14' D 12 kips 12' B
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