9N B 50 Imm 290 mm
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
Figure (a) is a diagram of the bones and biceps muscle of a person's arm supporting a mass. Tension in the biceps muscle holds the forearm in the horizontal position, as illustrated in the simple mechanical model in Fig. (b). The weight of the forearm is 9 N, and the
mass = 2 kg
a) Determine the tension in the biceps muscle AB.
b) Determine the magnitude of the force exerted on the upper arm by the forearm at the elbow joint C.
Transcribed Image Text:(a)
m
-200 mm
9N
B
(b)
50
Imm
-150 mm
290
mm
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