UNIT 4 MECHANICAL SYSTEMS Flashcards
1
Q
what is a lever
A
a bar that is free to rotate around a fixed joint
2
Q
fulcrum
A
the point of a lever that does not move
3
Q
effort force
A
the force supplied to any machine to produce an action
4
Q
load
A
the weight of an object
5
Q
effort arm
A
in a lever the distance between the fulcrum and the effort arm
6
Q
load arm
A
in a lever the distance between the load
and the fulcrum
7
Q
what is work
A
work is energy in motion
8
Q
what are joules used for?
A
joules are used to measure energy
9
Q
what is speed
A
rate of motion
10
Q
what is a pulley?
A
a wheel with a grooved rim
11
Q
what is kinetic energy
A
the energy of motion
12
Q
what is potential energy?
A
stored energy
13
Q
transmission
A
energy is transferred from one place to another
