Find load to create equilibrium on a bar.

In summary, a 6.0 m bar is supported by a fulcrum at 3.9 m from the left end and has a load of 468 N applied to its left end. To create equilibrium, a load in Newton must be applied to the right end of the bar. Using the moment equation, M=Fd, and a sketch, the downward force must equal the upward force for equilibrium to be achieved. If there is difficulty in solving, it could possibly be due to a simple arithmetic error.
  • #1
ChemValleyOP
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Homework Statement


A 6.0 m bar is supported by a fulcrum at 3.9 m from the left end. There are loads applied to each end of the bar. The load at the left end of the bar is 468 N. What load in Newton should be applied to the right end of the bar to create equilibrium?

Homework Equations


M=Fd

The Attempt at a Solution


I attempted to solve the solution by using a sketch and the M=Fd equation but for some reason I cannot figure out how to create equilibrium. I know that the downward force must = upward force? I would really appreciate just a little bit of guidance and I'm sure a light will go off up there!
 
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  • #2
Well, show us your sketch and your work with the moment equation. It might be just a simple arithmetic mistake.
 

1. How do you find the load to create equilibrium on a bar?

To find the load to create equilibrium on a bar, you need to use the principle of moments. This means that the sum of the clockwise moments must be equal to the sum of the counterclockwise moments. By setting up and solving an equation using this principle, you can determine the required load to balance the bar.

2. What factors affect the load required for equilibrium on a bar?

The load required for equilibrium on a bar is affected by several factors, including the weight and position of the bar itself, the weight and position of any additional loads on the bar, and the distance between the supports holding the bar in place. The length and material of the bar may also impact the load needed for equilibrium.

3. How do you determine the position of the load for equilibrium on a bar?

The position of the load for equilibrium on a bar can be determined by using the principle of moments and solving for the unknown distance. This can be done by setting the sum of the clockwise moments equal to the sum of the counterclockwise moments and then solving for the unknown distance.

4. What happens if the load is not properly positioned for equilibrium on a bar?

If the load is not properly positioned for equilibrium on a bar, the bar will not be balanced and may rotate or tip over. This can lead to potential safety hazards and may also cause damage to the bar or other objects in its vicinity.

5. Can a bar achieve equilibrium with only one load?

No, a bar cannot achieve equilibrium with only one load. In order to achieve equilibrium, the sum of the clockwise moments must be equal to the sum of the counterclockwise moments. With only one load, there is no opposing moment to create balance. Additional loads or counterweights are needed to achieve equilibrium.

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