How does the size of a ideal mechanical advantage compares to the mechanical advantage?

Answer 1

This is because the actual mechanical advantage is the actual calculation found after dividing the effort force by the output force. Ideal mechanical advantage is what many people would call and estimate. When estimating mechanical advantage, the numbers are always rounded. This makes actual mechanical advantage less.

Sources: Science teacher

------------------------------------------------------------------------------------------------------------------

The answer above is incorrect.

The ideal mechanical advantage (IMA) is usually less than the mechanical advantage (MA) in a given machine because of the friction acting on the machine. There will always be some frictional resistance that increases the effort necessary to do the work.

Answer 2

In a real world situation, friction is the chief culprit that robs machines of their ideal mechanical advantage. Friction generally evidences itself as heat. In a car engine, any gas engine really, they use oil to reduce that friction component. If the oil were not there, the parts would melt into each other, from friction.

mechanical advanteage = output force / input force

Answer 3

The ideal mechanical advantage is one you would calculate based on geometry and principles such as the lever rule, gear ratios, numbers of strings on a pulley and so on. In theory, it equals the ratio of output force to input force as well as input displacement over output displacement.

Fout = MA * Fin

Din = MA * Dout

this happens to imply that no energy is lost in the system since

Ein = Fin * Din = Fout/MA * MA * Dout = Fout * Dout = Eout

In the real world, there are always losses along the way. For example, the fulcrum has friction, gears generate heat, and pulleys squeak. That is why you will always get a slightly different number if you actually measure your forces and take the ratio. This number will be your true mechanical advantage.

Answer 4

Ideal mehanical advantage is acting as if friction is not there, actual is well... real so friction is there.

>

Machine efficiency (%) = (work out / work in) * 100

Answer 5

In general, Ideal Mechanical Advantage is larger than the Mechanical Advantage because it looses thermal energy or friction.

Answer 6

Mechanical advantage is a ratio of forces. Efficiency is a ratio of powers.

Answer 7

They are both the same.

Answer 8

Friction!

Answer 9

They are gay. Penis

Answer 10

Subscribe to fazekev