levers Flashcards
1
Q
what is a lever
A
a bar that can can turn when you exert force onto one end of the bar
2
Q
force you exert on a bar is called:
A
the effort
3
Q
weight of the object you lift is called:
A
the load
4
Q
another word for pivot is
A
fulcrum
5
Q
is the distance from the effort to the pivot smaller or bigger than the distance from the pivot to the load
A
greater
6
Q
what is a force multiplier
A
a machine that multiples the force you exert on it
7
Q
what is a pivot
A
the point where turning effect is created
8
Q
what is a moment
A
the turning effect of a force
9
Q
what does moment rely on
A
depends on the force being applied on the pivot and distance from the effort to the pivot
10
Q
formula for moment
A
m = force x distance
11
Q
what is moment measured in
A
newton metres
12
Q
what is equilibrium
A
when lever is balanced
