Simple Machines with Bill Nye

what is a simple machine?
answer:
a simple machine is a machine consisting of only one or two parts.
there are six types of a simple machine:
a.lever
b.inclined plane
c.wedge
d.screw
e.pulley
f.wheel and axle

some examples of lever are:
*pliers
*scissors
a.)a lever is a simple bar that can rotate about a point called FULCRUM


b.)an inclined plane is a simple machine that reduces the force needed to lift loads
*some example of an inclined plane is:
*a ramp



c.)a wedge is an inclined plane with either one or two sloping sides
*some examples of a wedge are:
*ax
*hatchets

d.)screw is an inclined plane wound around a cylinder
*some example of screw is:
*screw

e.)pulley is used to change direction of force


f.)wheel and axle increase the amount of force
*some example of wheel and axle is:
*doorknobs