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Force = Mass x Acceleration. The is measured in units called Newtons (N). AKA 1N = 1kg x 1m/s² (p.45)
calibrated in newtons measures weight or force in calibrated in grammes to measure mass
moment of a force
is equal to the force multiplied by the perpendicular distance between the force and the fulcrum.
A gain in effort or distance or a change of direction resulting from the use of a simple machine
any of the six elementary devices(including levers and pulleys,wedges screw inclined plane wheel and axil) that provide mechanical or other advantage
"the one in the middle"
classes of levers are found by identifying this section of the lever system
used when a specific force must be applied to a nut or bolt head.
deflecting beam, dial indicating, and micrometer, slipes when a specific level of tightness is reached preventing overtightness
center of gravity
The point at the center of an object's weight distribution, where the force of gravity can be considered to act.
the state of an object balanced so that any small displacement or rotation raises its center of gravity, causing it to return to its origional position eg a half full bottle standing on its base
the state of an object balanced so that any small displacement or rotation lowers its center of gravity eg bottle standing on its neck
the state of an object balanced so that any small movement neither raises nor lowers its center of gravity eg rolling bottle on a flat surface.
law of the lever
When balanced, the sum of the clockwise moments equal to the sum of the anticlockwise moments
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