What is lever arm?

Some articles on lever arm, lever:

Myosin - Nomenclature, Evolution, and The Family Tree
... group causes the "power stroke," in which the "lever arm" or "neck" region of the heavy chain is dragged forward ... Since the power stroke always moves the lever arm by the same angle, the length of the lever arm determines the displacement of the cargo relative to the actin filament ... A longer lever arm will cause the cargo to traverse a greater distance even though the lever arm undergoes the same angular displacement - just as a person with longer legs can move farther ...
Middle Ear - Ossicles
... waves in the fluid of the cochlea (or inner ear) with a lever arm factor of 1.3 ... is a steadily increasing body of evidence that shows that the lever arm ratio is actually variable, depending on frequency ... The measurement of this lever arm ratio is also somewhat complicated by the fact that the ratio is generally given in relation to the tip of the malleus (also known as the umbo) and the level of the middle ...
Torque
... torque is defined as the cross product of force and the lever-arm distance, which tends to produce rotation ... depends on three quantities the force applied, the length of the lever arm connecting the axis to the point of force application, and the angle between the force vector and the lever arm ... to the point where force is applied), and r is the length (or magnitude) of the lever arm vector, F is the force vector, and F is the magnitude of the force, × denotes the cross product, θ is ...
Bit Shank - Length and Leverage
... In Dressage the length of the lever arm portion of the cheek cannot exceed 10 cm ... between the length of the purchase and the lever arm also affects the amount and type of leverage that is applied to the chin and poll of the horse (pro ... A long lower shank (lever arm) in relation to the upper shank (purchase) increases the leverage, and thus the pressure, on the curb groove and the bars of the mouth ...
Net Force - Translation and Rotation Due To A Force - Rigid Bodies
... The straight line segment is the lever arm of the force with respect to the center of mass ... As the illustration suggests, the torque does not change (the same lever arm) if the application point is moved along the line of the application of the ... If the amount of force is 2 N, and the lever arm 0,6 m, the amount of torque is 1,2 Nm ...

Famous quotes containing the words arm and/or lever:

    ... possibly there is no needful occupation which is wholly unbeautiful. The beauty of work depends upon the way we meet it—whether we arm ourselves each morning to attack it as an enemy that must be vanquished before night comes, or whether we open our eyes with the sunrise to welcome it as an approaching friend who will keep us delightful company all day, and who will make us feel, at evening, that the day was well worth its fatigues.
    Lucy Larcom (1824–1893)

    Now William pulled the lever down,
    And click-clack went the printing-press.
    William was the only printer in town
    Who had peeped while the angels undress.
    Allen Tate (1899–1979)