What is the moment of friction force f(B) at B about point A? A) the moment of friction force f(B) at B about point A is 220 Ib.ft B) the moment of friction force f(B) at Babout point A is zero O 9 the moment of friction force f(B) at Babout point A is 320 Ib.ft O D) the moment of friction force f(B) at B about point A is 120 Ib.ft O E) the moment of friction force f(B) at Babout point A is 420 lb.ft
What is the moment of friction force f(B) at B about point A? A) the moment of friction force f(B) at B about point A is 220 Ib.ft B) the moment of friction force f(B) at Babout point A is zero O 9 the moment of friction force f(B) at Babout point A is 320 Ib.ft O D) the moment of friction force f(B) at B about point A is 120 Ib.ft O E) the moment of friction force f(B) at Babout point A is 420 lb.ft
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Transcribed Image Text:What is the moment of friction force f(B) at Babout point A?
O A) the moment of friction force f(B) at Babout point A is 220 Ib.ft
B) the moment of friction force f(B) at Babout point A is zero
O C) the moment of friction force f(B) at Babout point A is 320 Ib.ft
D) the moment of friction force f(B) at B about point A is 120 Ib.ft
O E) the moment of friction force f(B) at Babout point A is 420 Ib.ft
Transcribed Image Text:weight of the bar is 100 Ib.
3 ft
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13 ft
5 ft
A
Normal force exerted on the bar at point A is NA
Normal force exerted on the bar at point B is NR
Friction force exerted on the bar at A isfA
Friction force exerted on the bar at B is f.
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