*MECHANICAL ADVANTAGE - mmckinnonscience



*MECHANICAL ADVANTAGE =

Levers

EFFORT ARM OR RESISTANCE FORCE OR EFFORT MOVEMENT

RESISTANCE ARM EFFORT FORCE RESISTANCE MOVEMENT

Wedge Inclined plane Pulley

WEDGE LENGTH OR RAMP LENGTH Number of strands

WEDGE THICKNESS RAMP HEIGHT

Wheel and Axle

DIAMETER OF WHEEL* EFFIC = WORK OUTPUT x 100%

DIAMETER OF AXLE WORK INPUT

* WORK = FORCE x DISTANCE

* WORK INPUT = EFFORT FORCE x EFFORT DISTANCE

* WORK OUTPUT = RESISTANCE FORCE x RESISTANCE DISTANCE

* SPEED = DISTANCE

TIME

* POWER = WORK

TIME

* FORCE = MASS x ACCELERATION

* ACCELERATION = FINAL SPEED - INITIAL SPEED

(DECELERATION) TIME

* 102 g = 1 N

* 1 lb. = 4.5 N

REMEMBER: ALWAYS DIVIDE THE BOTTOM NUMBER INTO THE TOP NUMBER.

5 Put the top number into the calculator first. Push /. Then, put the bottom number in next.

10 Push =. 5 / 10 = .5

21 Put the top number into the calculator first. Push /. Then, put the bottom number in next.

7 Push = . 21 / 7 = 3

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