the bars shown are at rest in a horizontal plane. A force P = 4000 N is applied
ID: 1848085 • Letter: T
Question
the bars shown are at rest in a horizontal plane. A force P = 4000 N is applied at point B on bar AB and a moment M is applied on bar CD. The dimensions for the system are a = 0.5 m, b = 0.2 m, and q = 45o. The static coefficient of friction between the two bars is ms = 0.3.
What is the largest moment M that can be applied to the system before the system starts to move?
the bars shown are at rest in a horizontal plane. A force P = 4000 N is applied at point B on bar AB and a moment M is applied on bar CD. The dimensions for the system are a = 0.5 m, b = 0.2 m, and q = 45o. The static coefficient of friction between the two bars is ms = 0.3. What is the largest moment M that can be applied to the system before the system starts to move?Explanation / Answer
Equating forces at point C
=> Normal force at C = P(a+b)/a = 5600
Friction force = N* = 1680
M = Normal force * (a/cos)cos + friction force * (a/cos)sin = 3640N-m
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