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2. Compound lever - Wikipedia

   en.wikipedia.org/wiki/Compound_lever

   In the example of a nail clipper on the right (a compound lever made of a class 2 and a class 3 lever), because the effort is applied vertically (that is, not perpendicular to the lever), distances to the respective fulcrums are measured horizontally, instead of along the lever. In this example, W/F is ⁠ 7 + 1 / 1 ⁠ × ⁠ 6 / 6 + 2 ⁠ = 6.

3. Lever - Wikipedia

   en.wikipedia.org/wiki/Lever

   The lever is a movable bar that pivots on a fulcrum attached to a fixed point. The lever operates by applying forces at different distances from the fulcrum, or a pivot. As the lever rotates around the fulcrum, points farther from this pivot move faster than points closer to the pivot.

4. List of movements of the human body - Wikipedia

   en.wikipedia.org/wiki/List_of_movements_of_the...

   The different types of levers in the human body. These levers consisting of First Class Lever, Second Class Lever, and a Third Class Lever. The list below describes such skeletal movements as normally are possible in particular joints of the human body.

5. Mechanical advantage - Wikipedia

   en.wikipedia.org/wiki/Mechanical_advantage

   Where a lever rotates continuously, it functions as a rotary second-class lever. The motion of the lever's end-point describes a fixed orbit, where mechanical energy can be exchanged. (see a hand-crank as an example.) In modern times, this kind of rotary leverage is widely used; see a (rotary) 2nd-class lever; see gears, pulleys or friction ...

6. Simple machine - Wikipedia

   en.wikipedia.org/wiki/Simple_machine

   A simple machine is a mechanical device that changes the direction or magnitude of a force. [1] In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called leverage) to multiply force. [2] Usually the term refers to the six classical simple machines that were defined by Renaissance scientists: [3] [4 ...

7. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

8. Gresley conjugated valve gear - Wikipedia

   en.wikipedia.org/wiki/Gresley_conjugated_valve_gear

   The longer 2 to 1 Lever is located on the right side of the locomotive, and the shorter Equal Lever on the left side. The Gresley conjugated gear is effectively an adding machine, where the position of the valve for the inside cylinder is the sum of the positions of the two outside cylinders, but reversed in direction.

9. Crowbar - Wikipedia

   en.wikipedia.org/wiki/Crowbar

   A crowbar with a curved chisel end to provide a fulcrum for leverage and a goose neck to pull nails. A crowbar, also called a wrecking bar, pry bar or prybar, pinch-bar, or occasionally a prise bar or prisebar, colloquially gooseneck, or pig bar, or in Australia a jemmy, [1] is a lever consisting of a metal bar with a single curved end and flattened points, used to force two objects apart or ...