topic 9

Subdecks (1)

what is an alternative name for the turning affect of a force
a moment
state the equation to calculate the moment of a force
moment = force x distance
what is a moment measured in
newton meters
what distance measurement is used when calculating a moment
the perpendicular distance from the pivot of a line to the action of a force
if an object is in equilibrium , what can be said about the moments acting on an object
ther clockwise moments are equal to the anticlockwise moments|
how do levers make use of moments
they increase the perpendicular diatance of the force from the pivot , so decrease the force needed to produce the same moment
how does lubricating levers/gears improve efficiency
there is less resistance : less energy is wasted/therefore less energy is put to waste
how are levers used to decrease the force required to lift something
levers use a pivot point and the concept of moments to reduce the force, the further away you are the pivot , the less force you need to lift the object up