Calculate evenly distributed force on a beam

In summary, the question asks whether the correct way to set up moment point calculations is to incorporate the distance from the evenly distributed force q to the moment point in A, using either the entire distance q is working on plus the distance from the beginning of q to point A, or the distance from the median of q to point A. The figure provided illustrates this, with the correct distance being from the median of q to A. There may have been a typo error in the calculation of this distance.
  • #1
dreamliner
16
0
If you have a beam with a force q evenly distributed on top of it, would this

ƩMA= 0 B*3,3-Cy*5,5-q*4,3*2,15=0

or this

ƩMA=0 B*3,3-Cy*5,5-q*4,3*2,15*3,35=0

be the right way to set up the moment point calculations? Basically what I'm unsure of is if I must incorporate the distance from q to the moment point in A and if so to use the entire distance q is working on+the distance from the beginning of q to point A, or to use the distance from the median of q to point A...

Hastily drawn up figure in order to illustrate what I mean:
 

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  • #2
It is from the median (CG of the load) to A but you didn't calculate that distance correctly, or maybe just a typo error
 

What is an evenly distributed force on a beam?

An evenly distributed force on a beam is a force that is applied uniformly over the length of the beam, rather than at a single point. This type of force is also known as a distributed load or a uniformly distributed load.

Why is it important to calculate evenly distributed force on a beam?

Calculating the evenly distributed force on a beam is important because it allows us to determine the maximum load that the beam can safely support without breaking. This is crucial in engineering and construction, as it ensures the structural integrity of a building or other structure.

How do you calculate evenly distributed force on a beam?

The formula for calculating evenly distributed force on a beam is F = (w * L) / 2, where F is the total evenly distributed force, w is the weight per unit length of the beam, and L is the length of the beam. For example, if the beam has a weight of 100 pounds per foot and a length of 10 feet, the evenly distributed force would be (100 * 10) / 2 = 500 pounds.

What factors can affect the calculation of evenly distributed force on a beam?

The calculation of evenly distributed force on a beam can be affected by several factors, including the type of material the beam is made of, the shape and size of the beam, and the method of support for the beam. Any changes in these factors can impact the weight per unit length of the beam and therefore affect the calculation of the evenly distributed force.

How does evenly distributed force on a beam differ from point load?

Evenly distributed force on a beam differs from point load in that point load is a single force applied at a specific point on the beam, while evenly distributed force is spread out over the entire length of the beam. Point load is often used to represent a concentrated weight or object on the beam, while evenly distributed force is used to simulate the weight of the beam itself or a distributed load placed on top of the beam.

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