4. Simple Machines
Simple tools used to make work easier
A tool used to make work easier
Consists of two or more simple machines put together
How do Machines Help Us?
Transfer force from one place to another
Increase the amount of force applied on a certain task
Change the distance, speed, and direction of the
Note: A machine cannot increase both force and distance
at the same time.
6. Forces Involved in Using a Machine
The force applied on the machine
The force exerted by the machine on the load that needs to be moved
The man exerts an
input force (effort)
which is "multiplied"
by the pulley, resulting
to output force that
can lift the heavy
Produced by a machine which only needs a small effort force
but has an increased output force
Can be computed by dividing the output force by the input force
The closer the work output is to the work input, the more
efficient a machine is. But no machine is 100% efficient.
9. Basic Types of Simple Machines
Wheel and Axle