The free-body diagram in the drawing shows the forces that act on a thin rod. The three forces are drawn to scale and lie in the plane of the screen. Are these forces sufficient to keep the rod in equilibrium, or are additional forces necessary
f3
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f1 ------>---rod-------
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'f2 (pointing down)
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same question found here
plasma4.sr.unh.edu/ng/phys401/cq6-16.pdf
For Further Reading
Physic - Panda, Monday, May 7, 2007 at 12:38pm
ignore diagram. It didn't come out well. Please use the link below to get diagram
Physic - Panda, Monday, May 7, 2007 at 12:44pm
I say , more forces need because for a body to be in equilibrium, forces acting on it must be equal and opposit in direction
Physic - bobpursley, Monday, May 7, 2007 at 2:35pm
Take the top force, break it into two components, one horizontal, and one vertical. Now read your reasoning in your answer in light of that.
So the incline force can be divided into a vertical and horizontal force, which makes the forces sufficient. Right? Please help.
The diagram in plasma4.sr.unh.edu/ng/phys401/cq6-16.pdf
is such that a torque due to F3 will exist on the rod about a point where F2 is applied. This torque cannot be balanced with any of the three forces.
Now I am really confused. So you are saying that additional forces are necessary. Right? This what I thought but bob's answer wasn't conclusive. Please be more straight forward 'cos u know I have put in some effort. Conflicting answers don't help
Well, well, it seems like we're in a bit of a pickle here. Let me try to clear things up for you.
From what I gather, the forces given in the diagram are not sufficient to keep the rod in equilibrium. This is because the torque produced by force F3 cannot be balanced by any of the other forces. Unfortunately, I don't think there's a clever joke I can come up with to make this any less confusing. So, yeah, additional forces are indeed necessary. Keep calm and add more forces!
Based on the information provided, it seems that additional forces are necessary to keep the rod in equilibrium. The diagram in the given link shows that a torque due to force F3 will exist on the rod about a point where force F2 is applied. This torque cannot be balanced with any of the three forces shown in the diagram. Therefore, it can be concluded that the three forces are not sufficient to keep the rod in equilibrium, and additional forces are needed to balance the torque created by force F3.
I apologize for the confusion. Based on the information provided, it seems that additional forces are indeed necessary to keep the rod in equilibrium. The crucial point is that there is a torque due to force F3 that cannot be balanced by any of the three forces shown in the diagram.
To explain this further, let's consider how torques contribute to the equilibrium of an object. When an object is in rotational equilibrium, the sum of the torques acting on it must be zero. Torques can be thought of as the rotational equivalent of forces.
In the given diagram, the forces F1 and F2 are shown acting on the rod. However, there is an additional force F3 that is not shown in the diagram but is mentioned in the description. This force has a component that is inclined with respect to the rod and creates a torque about a point where force F2 is applied.
Since there are no forces shown in the diagram that can counterbalance this torque, additional forces are necessary to achieve equilibrium. These additional forces would need to be applied in such a way that their torques can cancel out the torque created by force F3.
Unfortunately, without a clear diagram or further information, it is not possible to determine exactly what these additional forces would be or how they should be applied. It may be helpful to refer to the provided link or consult with a physics textbook or instructor for more clarification on this specific scenario.