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Engineering Mechanics - Equilibrium of a Particle - Discussion

Discussion Forum : Equilibrium of a Particle - General Questions (Q.No. 7)
Equilibrium of a Particle
7.

The patella P located in the human knee joint is subjected to tendon forces T1 and T2 and a force F exerted on the patella by the femoral articular A. If the directions of these forces are estimated from an X-ray as shown, determine the magnitudes of T1 and F when the tendon force T2 = 6 lb.. The forces are concurrent at point O.

T1 = 1.042 lb, F = 5.91 lb
T1 = 5.64 lb, F = 5.64 lb
T1 = 1.203 lb, F = 5.31 lb
T1 = 4.45 lb, F = 6.82 lb
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
3 comments Page 1 of 1.
Jon said:   10 years ago
My answer after working this problem out is close but not what you have here. How do I work this problem out?
Sarbajit said:   9 years ago
Lami's theorem.

T2/sin(120) = F/sin100
F = 6.82.

T2/sin120=T1/sin140,
T1 = 4.45.
Charan teja said:   1 decade ago
Answer please?
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