moments, levers and gears. Flashcards
1
Q
what is a moment?
A
turning effect of a force.
2
Q
what is the formula for a moment?
A
force × the perpendicular distance from the line of action of the force to the pivot.
3
Q
what do levers use moments to act as?
A
force multiplier.
4
Q
what do levers allow?
A
larger force to act upon the load than is supplied by the effort so it is easier to move large or heavy objects.
5
Q
what are gears?
A
rotating wheels with teeth that interlock with another wheel.
6
Q
what are gears used for?
A
change the moment.
7
Q
gears: what are the number of teeth directly proportional to, how is this shown in a formula?
A
radius of gear 1/ radius of gear 2 =
rate of rotation gear 2/ rate of rotation gear 1.
