| Key words | Key words part 2 | Key definitions | Simple machine | Simple machines p.2 |
|---|---|---|---|---|
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What is RATE AT WHICH WORK IS DONE
Power
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What is THE AMOUNT OF FORCE YOU EXERT ON A MACHINE
INPUT FORCE
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What is WORK OUTPUT
THE WORK DONE BY A MACHINE
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What is Allows you to exert your force over a LONGERdistance, allowing you to do the same amount of work with LESSforce. *The most common example is a RAMP.
Inclined Plane
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What is Wheel & Axle
This machine is made of two cylinders (larger is the wheel while the smaller is the axle) that spin on the same axis. Both must move at the same speed, so one moves farther than the other. You can magnify input force amazing amounts using this machine
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What is FORCE EXERTED ON AN OBJECT THAT CAUSES IT TO MOVE
Work
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What is THE AMOUNT OF FORCE THE MACHINE PUTS ON THE OBJECT
OUTPUT FORCE
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What is COMPOUND MACHINE
DEVICE THAT COMBINES TWO OR MORE SIMPLE MACHINES
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What is A wedge is two inclined planes put together. It works the same way to lessen input force by increasing input distance. It also helps by changing the direction of the force. Instead of moving an object along the inclined plane, though, you move the wedge through the object
Wedge
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What is Pulley
A rope is attached to a load and then passed through one or more support locations. Pulleys can easily form a machine where the direction of force is changed. COMBININGmultiple pulleys make moving large objects an easy task
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What is THE NUMBER OF TIMES A MACHINE INCREASES THE FORCE THAT IS APPLIED TO IT
Mechanical Advantage
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What is DISTANCE OVER WHICH THE INPUT FORCE ACTS
INPUT DISTANCE
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What is JOULE
THE SI UNIT OF WORK
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What is A screw is an inclined plane wrapped around a cylinder. They decrease the amount of force needed by greatly increasing the distance traveled
Screw
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What is Block & Tackle
When you combine fixed and movable pulleys, you create pulley systems called Block & Tackle. To calculate the MA, count every rope that is ‘holding up the weight
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What is (MA) = OUTPUT FORCE / INPUT FORCE
Mechanical Advantage ( equation)
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What is DISTANCE THROUGH WHICH THE LOAD MOVES
OUTPUT DISTANCE
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What is FORMULA FOR WORK
WORK = FORCE X DISTANCE
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What is A lever is a rigid, straight surface that balances at some point on an unmoving fulcrum. A person can do a lot with levers – they are versatile. Levers change the direction of the force. Levers can have a mechanical advantage that is very large or one that is very small, like a fraction
Lever
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What is Compound Machine
You create a compound machine when you combine simple Machine machines together machines together.
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What is PERCENTAGE OF INPUT WORK THAT IS CONVERTED TO OUTPUT WORK
EFFICIENCY
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What is INPUT WORK = INPUT FORCE X INPUT DISTANCE
WORK INPUT (EQUATION)
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What is FORMULA FOR POWER
POWER = WORK / TIME
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What is THE SI UNIT OF POWER
WATT
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What is machines make work easier by trading force for distance.
What is the big idea of this Unit
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