Lesson 1
Lesson 2
Lesson 3
Vocabulary
Equation
100
The direction of the force applied an the direction of the motion.
What factors affect work?
100
Size of a force; Distance a force acts; Direction of a force.
What does a machine change?
100
Doing work using only one movement.
What is a simple machine?
100
The rate at which work is done.
What is power?
100
Work(in joules)= force(in newtons)multiplied by distance(in meters).
What is the equation for work?
200
Increases the objects energy.
What is the work done when lifting an object?
200
Mechanical advantage if no friction existed.
What is ideal mechanical advantage?
200
The fulcrum is between the input force and the output force.
What is contained in a first class lever?
200
The ratio of a machine's output force produced to the input force applied.
What is mechanical advantage?
200
Mechanical advantage= output force divided by input force.
What is the mechanical advantage equation?
300
Watts.
What is the SI unit of power?
300
Can be less than 1, equal to 1, or greater than 1.
What is me mechanical advantage?
300
Lever, wheel and axle, inclined plane, wedge, screw, and pulley.
What are some types of simple machines?
300
A machine is the ratio of the output work to the input work.
What is efficiency?
300
Power=work divided by time.
What is the equation for power?
400
The newton-meter.
What is another name for joule?
400
Coverts some input work to thermal energy.
What can friction do?
400
Your neck, foot, and arm.
What are three types of levers in your body?
400
An axle attached to the center of a wheel and both rotatate together.
What is a wheel and axle?
400
Efficiency=output work divided by input work.
What is the efficiency equation?
500
Kinectic energy?
What kind of energy is gained when lifting an object?
500
Indicates how it changes an input force.
What does mechanical advantage of a machine indicate?
500
Two or more simple machines that operate together.
What is a compound machine?
500
The point about which a lever pivots.
What is a fulcrum?
500
Ideal mechanical advantage=length of inclined plane divided by height of inclined plane.
What is the equation for ideal mechanical advantage?
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