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what is mechanical advantage? explain me in detail.
- prasanthi (age 10)
vivekananda high school, nellore, ap, india
Mechanical advantage is basically a number that represents the
advantage of using a machine. There are different simple machines that
each give some mechanical advantage. My favorite and probably the
easiest to understand is the lever.
Levers appear in many places. Forks, chopsticks, spoons, and a
number of other tools are basically levers. A lever has 3 basic parts.
The place where you apply the force, the place that you want to move,
and the place where the lever balances (this is the fulcrum). Based on
the different lengths of the lever, you get different mechanical
advantages. For example, you have a lever that has a box on one end.
You want to lift the box. If the distance is longer from the fulcrum to
you than from the fulcrum to the box, you will find it easier to lift
the box than if you picked it up by hand. This is mechanical advantage.
You have used a machine (a lever) to mach things easier for you.
(republished on 07/13/06)
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