Pulley
what can a pulley be used for
Water well, Window shade, Crane
A scissor is and example of what class lever
first class lever
how is a inclined plane used
An inclined plane is a board or other flat surface that is set at an angle to a surface.
what is a pulley
A pulley is a wheel with a groove around its outside edge.
example of a lever
scissors,hammer, and rake
what are the 3 types of inclined planes
first class
second class
third class
MA=?
number of rope segments
define a lever
A lever makes it easier to lift and lower objects.
how does a inclined plane make the job easier
An inclined plane makes it easier to raise or lower an object.
how does a pulley make work easier
A pulley makes work easier by changing the direction of force.
how is a lever used
A lever is a board or bar that sits on a fixed point called a fulcrum.
why does a inclined plane makes it to where you have to apply more force?
by making it easier to raise or lower an object.
what does a consists of
A pulley system consists of two or more pulleys.
MA=?
Distance from fulcrum to Input force
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distance from the falcon to out put forces
exsamples of a inclined plane
Slide, Stairs, Ramp