Energy
What is energy?
The ability to do work or cause change
What is work?
A transfer of energy when an applied force moves an object over a distance.
What is power?
The rate at which work is done.
What is a machine?
A device that makes doing work easier
This simple machine is an inclined plane wrapped around a post. What is it?
A screw.
A compound/complex machine.
This simple machine is used to spilt objects or hold them into place. What is it?
A wedge.
Name the five types of kinetic energy.
Thermal, Mechanical, Radiant, Sound, Electircal
What two factors are needed to find out how much work is done?
Force and Distance
What two factors are needed to find power?
Work and time
What is mechanical advantage?
The number of times a machine increases a force exerted on it.
This simple machine makes it easier to raise or lower heavy objects by changing the distance of applied force. What is it?
An inclined plane.
What are the four Protentional Energies?
GPE, Chemical, Nuclear, Elastic
What MAIN two things are needed to find mechanical advantage?
Input force and output force
Name all 6 simple machines.
Inclined plane, wedge, screw, lever, wheel and axle, and pulley
When I go running, what energy transformation takes place? - Explain
Chemical energy is transformed to kinetic energy (Mechanical/Heat)
How do we calculate efficiency?
(Actual Mechanical Advantage/Ideal Mechanical Advantage)100 or (Work Output/ Work Input)100
What class of lever has a set up of:
Fulcrum --> Effort --> Load
3rd class lever