Work, Power & Simple Machines Flashcards
1
Q
mechanical advantage
A
the number of simple machines x by force
2
Q
power
A
the rate at which work is done
3
Q
efficiency
A
work output / work input
4
Q
compound machines
A
combination of simple machines
4
Q
output force
A
force exerted by axle in wheel & axle
5
Q
effort force
A
F in
5
Q
ideal machine
A
device in which output equals work input
5
Q
simple machine
A
any device that accpmplishes work in one movement
5
Q
input force
A
force applied by machine
6
Q
screw
A
inclined plane wrapped around cylinder
6
Q
fulcrum
A
fixed point of lever
7
Q
increasing length
A
increases IMA of an inclined plane
8
Q
work output
A
increases as the efficiency of a machine increases
9
Q
IMA of an inclined plane 8m long & 2m high
A
4m
9
Q
wheel & axle
A
2 different-sized wheels that rotate together
