Lab - levers

Lab - levers - Components of a Lever System • Fulcrum •...

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Unformatted text preview: Components of a Lever System • Fulcrum • Force • Resistance Fulcrum • the pivot on which a lever moves Force • a force is any external agent that causes a change in the motion • A push or pull Resistance cc Torque • Torque , also called moment or moment of force • The tendency of a force to rotate an object about an axis, fulcrum , or pivot . • Just as a force is a push or a pull, a torque can be thought of as a twist. • Movement along a curved path Vector • Arrow shows direction of movement Mechanical Advantage • The leverage is termed mechanical advantage • Longer lever arm is better MA; who could do the best lifting • MA = Distance over which leverage is applied Distance over which load is moved • MA = Output force/ Input force First Class Lever • Ex: seesaw • Force – Fulcrum-Resistance • In a first class lever, the weight to be moved is at one end of the lever, the applied force is at the other end, and the fulcrum (the pivot or turning point) is between the two....
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This note was uploaded on 02/11/2010 for the course AHS 151 taught by Professor Bialstok during the Fall '09 term at Nassau CC.

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Lab - levers - Components of a Lever System • Fulcrum •...

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