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What does load force mean?

Updated: 8/10/2023
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11y ago

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It is all about context.


Let's talk about a clothesline.

The load on the clothesline is the weight of all the clothes hanging from the clothesline.
That load is one of the forces on the line.

Each end of the clothesline is attached to something; the clothesline pulls on that thing, and that thing pulls with an equal and opposite force on the clothesline.
That pull is another one of the forces on the line.
The force of that pull is often many times the force of the load of the clothes.

There is also the small force of gravity acting on the mass of the clothesline itself.
That force is another one of the forces on the line.

On some days, the wind pushes directly on the line, and indirectly on the clothes hanging on the line.
That "wind load" is another force on the clothesline.

Many students taking classes in statics learn about the internal forces on ropes such as this clothesline.
They imagine cutting the line, holding the cut ends with their hands, and try to figure out how hard they would have to pull to keep it in the same place that it was before the cut.
In other words, they are trying to figure out the internal pull of one part of the rope on the other part.
These students learn about many kinds of internal (non-load) forces, such as tension, compression, torsion, bending moment (torque), etc.
In ropes, such internal forces are always in tension, but other (non-rope) structures have all these other kinds of internal forces.

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14y ago
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13y ago

Load is a force measured in pounds and is a vector with magnitude and direction.

Stress is related to force divided by area and is measured in pounds per square inch. Ten pounds (force)applied over 2 square inches is 5 pounds per square inch stress. Stress is a second order tensor, and while force can be added as a vector sum stress cannot if it occurs in different directions.

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11y ago

Load force means how much force is needed when the load is on the top

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Where are the load effort and fulcrum located on a second class lever?

No, the function of the fulcrum remains the same The only change would be the ratio of force to load The closer the fulcrum is the the load, the less force required to lift it The farther away the fulcrum is from the load, the more force required to lift it


How does the position of the fulcrum and the location of the load affect the amount of effort force you must exert to lift the load?

To do this you first have to calculate your ideal mechanical advantage (IMA). The IMA is equal to the effort distance (the distance from the fulcrum to where you will apply the effort) divided by the load distance (the distance from the fulcrum to the load). You can then set your IMA equal to your acutal mechanical advatage (AMA) which assumes 100% efficiency. The AMA is equal to the load force (the weight of what you are lifting) divided by the effort force (the # you are looking for). So, for example, if your IMA is 5 and your load force is 500 lbs: 5=500/effort force. Therefore the effort force would be 100 pounds.


What are the 3 classes of levers?

Levers are classified into three types (first-class, second-class, and third-class) depending on the relative position of the fulcrum (pivot point), the point of applied (input) force, and the location of the load (output force). In a first-class lever, the fulcrum is between the input force and the output force, and the load is moved in the opposite direction of the applied force. Placing the fulcrum closer to the load gives an advantage of force (less force needed to move the load a shorter distance), while a fulcrum closer to the point of applied force gives an advantage of distance (the load is moved a greater distance but more applied force is needed). First-class levers include a crowbar, using a hammer's claw end to remove a nail, and a pair of scissors. In a second-class lever, the load is between the fulcrum and the point of applied force, so both forces move in the same direction. Less force is needed to move the load, but the load does not move as far as the direction over which the input force must be applied. Examples include the wheelbarrow, a bottle opener, and a door on its hinges. In a third-class lever, the input force is applied between the fulcrum and the load, and both move in the same direction. The amount of applied force is always greater than the output force of the load, but the load is moved a greater distance than that over which the input force is applied. Examples include a hammer driving a nail and the forearm of a person swinging a baseball bat. If you want to find out any more, go to: http://www.technologystudent.com/forcmom/lever1.htm :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :)


How does a pulley make work easier if it doesn't multiply force?

A single wheel pulley means that the rope you hold has one attachment to the load so the force is the same as the load, just in a different direction. So lifting something means you could actually apply the whole of your weight to the rope, rather than just the strength of your muscles. (Multiple pulley wheels mean that the same rope tension is applied to the load several times, so the force you apply to the rope is applied to the load several times.)


What is the formula for TMA and AMA?

AMA=force produced/force applied TMA=distance effort moves/distance load moves

Related questions

What does a load mean on a lever?

force


What is the force on the load for a catapult?

load force


Whats the force needed to move a load?

the force on the load is the force exerted by the simple machine on the load. All simple machines involve a force on the load and an effort force.


What is load force?

The load force is applying a force to move or hold an object that has weight.


What is mean by load for machine design?

Any external force to which a machine part is subjected


How do you find the effort force if you already have the load force and the distance moved by load force?

work (effort) equals load times distance


In a class 3 lever is the effort force ever less the force exerted on the load?

A class three lever uses an operating force between the fulcrum and the load. The movement on the load will therefore be larger than the movement of the force. The force applied to the lever will always be less than the force exerted on the load.


What is the difference between axial load and radial load?

Axial load (or thrust load) is a force applied parallel to the longitudinal axis, whereas, a radial load is a force applied transverse to this longitudinal axis.


What force a lever uses to lift a load is?

effort force


Physics definition to move a load?

Do you mean Newton's Second Law of Force? It is differential change in momentum per unit time, due to an external force


What is the input and output of a load cell?

The input of a load cell is the force or weight applied to it. The output of a load cell is an electrical signal, typically in the form of voltage or current, that is proportional to the applied force or weight.


What force opposes the effort force?

load force and friction oppose the effort force