Vocabulary
The force exerted by a machine.
What is output force?
Energy that is stored as a result of position or shape.
What is potential energy?
An inclined plane wrapped around a central axis.
What is a screw?
The unit for power.
What is watt?
An ax is an example of what type of simple machine?
What is a wedge?
The product of force and distance.
What is work?
What is output distance?
Any device that makes work easier by changing the direction or amount of force to accomplish a task.
What is a simple machine?
Unit of work.
What is a joule?
The type of machine on the board.
What is an inclined plane?
The energy of an object due to its motion.
What is kinetic energy?
The distance the input force is applied.
What is the input distance?
This is a bar, beam, stick, or rod and a fulcrum or pivot point.
What is a lever?
State the law of conservation of energy.
What is energy cannot be created or destroyed, only change from one form to another or transferred from one object to another?
Using the diagram on the board. If the ramp show were coated with a smoother surface, how would the AMA of the ramp change?
What is increase?
The force a person exerts on a machine.
What is the input force?
This is the measure of how much of the work put into a machine is changed into useful output work by the machine
What is efficiency?
Explain 2 ways a machine makes work easier for you.
What is a by increasing or magnifying the force you apply and/or by changing the direction of your force?
This is equal to the input distance divided by the output distance.
What is ideal mechanical advantage?
A construction worker uses a cart to move a load of bricks a distance of 10.0m across a parking lot. He pushes the cart with a constant force of 220N. If the work is 2,200 J and it takes him 1.2 minutes to move the cart, what is the power?
P = 30.56 W
The ability to do work.
What is energy?
The time rate of work or how much work is done in a given time. Equal to work divided by time.
What is power?
Name the six simple machines
What is lever, pulley, wheel and axle, screw, inclined plane, and wedge
Gravitational potential energy depends on this...
What is the object's mass, height (relative to reference level), and acceleration due to gravity?
Energy stored in gasoline.
What is chemical energy?