wheel & Axle
what type of simple machine is a doorknob?
wheel and axle
A pulley is used to?
lift certain objects
first class levers are the most common or rare types of levers?
common
using a wedge is like pushing or pulling something up a ramp?
pushing
which simple machine helps make work easier?
all of them
What is a wheel & axle?
the simple machine made of as wheel attached to a rod
does moving one or more pulleys increase or decrease the mechanical advantage?
increase
name all of the categories in the lever family
simple lever, the pulley, wheel & axle
a wedge is formed from how many inclined planes?
two
which simple machine turns the ferris wheel?
wheel & axle
main reason a wheel & axle makes work easier?
reduced effort
Is a pulley used to lift or drop certain objects?
lift
All levers have a...? That turns around a point called...?
rigid arm, fulcrum
is a spiral staircase an inclined plane?
no
what simple machine is commonly found in a bicycle?
wheel & axle
the term for the push or pull applied to an object?
force
in the middle of a pulley is the....?
fulcrum of a lever
The levers are divided into how many classes?
three classes
is an axed blade an inclined plane?
yes
a bone is what kind of simple machine?
lever
wheel & axle are similar to what kind of simple machine?
lever or pulley
multiple pulleys are called a....?
block and tackle system
These levers multiply the distance rather than the force, what lever class am I?
third lever class
a wedge is formed from two inclined planes that are placed back to front or back to back?
back to back
a knife is what kind of simple machine?
wedge