how do levers make you stronger?

Answer 1

You move more distance to get more force. It concentrates the work you do to move the lever, on the other side of the fulcrum, which is much smaller. There is the same amount of work on both sides of the fulcrum, so on one side you use less force and move more distance, and on the otherside you get more force for less distance.

Answer 2

levers do no make you stronger, they give you mechanical advantage

that is, they turn a small force, delivered over a long sweep, into a large force, delivered over a short sweep

the amount of work done is the same with or without the lever

the amount of force necessary to do the work is much lower with the right lever because you move your end of the lever a long distance compared to the distance the other end moves

this is the same kind of mechanical advantage you get from gears (like in a 10 speed that allows you to turn your pedals around many times and have the bike wheel just go around once, so that you can climb easily)

Answer 3

To move an object you need to expend a certain amount of energy. If you just try to pick up the object you have to expend a lot of energy all at once to move it just a little bit. The lever lets you to use a smaller amount of force but you have to use that force over a greater distance--the distance you move the end of the lever. It is much more economical that way! I can pick up and move 10 lbs 10 feet easily. I have a hard time moving 100 lbs. 1 foot. If I can just move 10 lbs of the weight at a time I end up moving 10 ft (back and forth) but that is easy for me. That is what the lever does for you a lighter weight--but a longer distance. Thus depending on how you have the fulcrum placed the longer you are going to move your end down the lighter the weight is going to feel.

Answer 4

They don't; they just give you something called mechanical advantage. You move the weight a much shorter distance than you move your arm, it is just that the effort you put forth is multiplied by the ratio of the lengths of the portions of the lever.

Answer 5

A longer distance gives you more rotational force, called torque.

T = F*d

According to this, as the distance, or length of the lever increases, so does the force, or torque.

Answer 6

Moment.
By using a strong anchor to transfer mechanical force, you can multiply the force input by travelling a greater distance than the output.

Answer 7

They don't make you stronger, but they allow you to generate more force by making you make a longer move proportionally

Answer 8

They allow you to convert a small force*a large distance into a large force*a small distance.