lever
what is a lever
see-saw, catapult
what are 2 things that wedges have
EX- ax and arrowhead
-wedge come in 2 basic varieties:1. Broad and flat (ax) and 2. Round and pointy (arrow tip)
how many parts do a wheel and axle have
-Has two parts- 1. wheel and 2. Axle (that move together)
what is a inclined plane
EX- ramp
what are the names of the simple machines
axle wheel wedge lever inclined plane and pully
what is one part of a lever
board
what does wedges do
used for chopping, cutting, scraping
what does a wheel and axle make and support
EX- pottery wheel, chariots, wheelbarrow
what does a inclined plane do
to move things up and down with ease
what are the things that simple machines have
increase the speed of a object
increase the force you can use
change the direction of the force
what is the 2 part of the lever
fulcrum(or pivot point)
what are one things that pully have
what parts four parts do pully have
- pottery wheel, chariots, wheelbarrow
Has two parts- 1. wheel and 2. Axle (that move together)
what happen without a axle
- Without an axle, a wheel is not nearly as useful or it will not work
Work-
When a force is used to move an object over a distance
what do pully's do
Without an axle, a wheel is not nearly as useful
what a Machine
anything that helps you do work
Effort
the force used to move the load
what are Compound Machines-
2 or more simple machines working together