moments and forces Flashcards
1
Q
what is the unit of measurement for forces?
A
newtons (n)
2
Q
what is the formula for a moment?
A
moment = force x perpendicular distance from pivot
3
Q
definition of a pivot
A
area from around the lever, middle of the lever to balance it out
4
Q
what are the 3 types of forces?
A
static, rolling and sliding
5
Q
what is friction?
A
a force that opposes motion
6
Q
define moment
A
a turning effect of a force
7
Q
moment = force x ____?_____ distance
A
perpendicular
8
Q
define force
A
a push or a pull
9
Q
what are some of the best examples for pivots/moments?
A
cranes and seesaws
10
Q
a) 10N x 5m = ? and b) 5N x 10m = ? (c) find the answer with units, and also add if theyre equal moments or not.)
A
a) 50 Nm b) 50 Nm c) yes, they are equal.
