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What do you need to calculate the mechanical advantage of a lever?
Wiki User
∙ 12y ago
A calculator and a formula for moments: Like distance from fulcrum x force = distance from fulcrum x force and I think mechanical advantage is the ratio of forces - for a lever for example where you need less force to exert a big force when for example, you wedge a crow bar in the side of the door to try and effect a break in
Wiki User
∙ 12y ago
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A lever is used to lift a 50 kg object at a constant speed if the applied force exerted on the lever is 100N what is the mechanical advantage of the lever?
The weight of the 50 kg object is (50 x 9.8) = 490 newtons.In order to lift the object with a force of 100 N, you need a mechanical advantage of 4.9 .That's the net mechanical advantage of the lever system, including all of its friction losses.
What is the equation for mechanical advantage?
Mechanical Advantage: F(out)/ F(in) Actual Mechanical Advantage is the ratio of Force outputed to Force inputed. (AMA=Fo/Fi) Similarly, IMA (Ideal Mechanical Advantage) = di/do
What do you need to know to calculate mechanical advantages?
radius of input, radius of output
What does a lever need to be a lever?
needs to have a fixed point that it can rotate around
When does an object have more mechanical energy than another object?
"Mechanical energy" is basically the sum of potential energy, and kinetic energy - thus, an object has more mechanical energy than another one when this sum is greater. You may just need to calculate these energies and add them up, to find out in specific cases.
A lever is used to lift a 50 kg object at a constant speed if the applied force exerted on the lever is 100N what is the mechanical advantage of the lever?
The weight of the 50 kg object is (50 x 9.8) = 490 newtons.In order to lift the object with a force of 100 N, you need a mechanical advantage of 4.9 .That's the net mechanical advantage of the lever system, including all of its friction losses.
What do you need to know to calculate the mechanical advantage of a compound machine?
torque in * input rpm/output rpm = torque out
When calculating the mechanical advantage of a lever what two pieces of information are needed?
You need to know the length of the lever and the location of the fulcrum along that length. The ratio of the lengths on either side of the fulcrum will determine the ratio of forces at either end. The length of the lever will dictate the total force possible. For a lever of length L divided into lengths a and (L - a) by the fulcrum (where a is the length of the lever between the fulcrum and the object you want to apply force to), the mechanical advantage will beM.A = (L-a)/aThe longer the lever, the bigger you can make the numerator of that fraction while keeping a unchanged.
Is it good to have a high mechanical advantage?
It may be good in some cases. A high mechanical advantage comes at a cost - you need to apply less force, but you need to apply it over a greater distance.
What is the equation for mechanical advantage?
Mechanical Advantage: F(out)/ F(in) Actual Mechanical Advantage is the ratio of Force outputed to Force inputed. (AMA=Fo/Fi) Similarly, IMA (Ideal Mechanical Advantage) = di/do
When using a lever do you do less work than if you lifted the object without the lever?
No, the amount of work done will be the same. The lever provides mechanical advantage by multipling force times distance applied. A 1 kg object will need about 10 Joules of work to lift it up a vertical distance of 1 meter, no matter whether it is lifted straight up, or over a greater distance such as up a ramp, or with a lever.
What do you need to know to calculate mechanical advantages?
radius of input, radius of output
What do you have to do to get a mechanical advantage greater than 1?
Well it depends on what you are using for a pulley the mechanical advantage is equal to the number of ropes lifting the object such as if you have one pulley the MA (mechanical advantage) is equal to 1 if you have two pullies the MA is 2 if you are using a lever such as a seesaw you have to move the fulcrum as close to the object being lifted and have to longest possible input arm. If you modify a seesaw a 60 pound child can lift a 200 pound adult. That is about all i know hope it helps if you are using a different simple machine or need more help email me at : icecbejohn@yahoo.com
What is the trade off between mechanical advantage and the distance within pulley systems?
Mechanical advantage: you can use some method (eg, lever or pulley wheels) to move an object which otherwise would be too heavy, or jammed. The trade off is that you can't get away with using less work - the reduced force you need to apply is compensated by the fact you have to move your force throgh a proportionately larger distance.
What is the mechanical advantage of a stationary pulley?
Its 1 you need more than 1 to improve mechanical advantage i think it's 2 A single pulley means one axel, making the IMA = 1. A double pulley's IMA would = 2, and so on and so forth.
What does it mean if a lever is at a mechanical disadvantage?
A lever at a mechanical disadvantage exerts a smaller force on the output arm than is exerted on the input arm; if you push with 10N on a lever with a disadvantage of 2, the other arm only exerts a 5N force. However, a lever with a mechanical disadvantage exerts the smaller force over a greater distance. Trebuchets are one example of a mechanically disadvantaged lever: the fairly small projectile doesn't need a huge force to propel it, and the greater distance afforded by the lever allows it to travel at great speed.
Can a mechanical advantage be a fraction?
Yes, mechanical advantage doesn't need to be a gear type which you can always count the ratio of teeth to a full number. A pulley type gear can be of a fraction in gear ratio. ========================== Think of a Class-1 lever ... like a see-saw ... that's 5 feet long, with the fulcrum 2 feet from one end: -- When the effort is applied to the longer side, the MA is 11/2 . -- When the effort is applied to the shorter side, the MA is 2/3 .
