Work
This is what a unit of work is called.
What is a joule?
This is the ideal efficiency of a machine.
What is 100?
An ax and a zipper are examples of this simple machine.
What is a wedge?
This is a compound machine with one wheel and axle linked to another wheel and axle.
What are gears?
= Force X Distance
What is the formula for work?
This is the number of times a force exerted on a machine is multiplied by the machine.
What is mechanical advantage?
This is the fixed point upon which a lever rotates.
What is a fulcrum?
What is a compound machine?
In order for work to be done on an object, it must do this as a result of force.
What is move?
This is what we call the way a machine would work under perfect conditions, as opposed to its actual mechanical advantage.
What is ideal mechanical advantage?
In a screwdriver, the handle is the wheel and this is what the shaft is.
What is the axle?
When you bend your leg, this part of your body is the fulcrum.
What is your knee?
This is what force is measured in.
What are newtons?
This is the percent of efficiency of a screwdriver if you do 200 J of work and the screwdriver does 100 J of work on a screw.
What is 50%?
This is an inclined plane wrapped around a central cylinder.
What is a screw?
= Work / Time
What is the formula for power?
These are the 3 things machines do to make work easier.
What is change the amount of force, distance over force, and direction of force?
This is another name for output force.
What is resistance force?
A rope wrapped around a grooved wheel.
What is a pulley?
This is what your front teeth act as when biting into an apple.
What is a wedge?