Work
Machines and efficiency
Simple machines #1
simple machines#2
Machine examples
100
Force X Distance
How do you calculate work?
100
A device with which you can do work in a way that is easier or more effective.
What is a machine?
100
is a grooved wheel with a rope around it
What is a pulley?
100
a flat slanted surface
What is an inclined plane?
100
muscles attached to our bones by tough connective tissue
What are tendons?
200
The amount of work you do when you exert a force of 1 newton to move an object a distance of 1 meter.
What is a joule?
200
The force you exert on the machine.
What is the input force?
200
The fixed point that a lever pivots around.
What is the fulcrum?
200
a device that is thick on one end and tapers to a thick edge on the other end. (two back to back inclined planes)
What is a wedge?
200
A ramp is an example of this simple machine.
What is an inclined plane?
300
When you exert a force on an object that causes the object to move some distance.
What is work?
300
The number of times a force exerted on a machine is multiplied by the machine.
What is mechanical advantage?
300
Inclined plane, the wedge, the screw, the lever, the wheel and axle, and the pulley
What are the six basic kinds of simple machines.
300
a rigid bar that is free to pivot, or rotate, about a fixed point.
What is lever?
300
A screwdriver is an example of this machine.
What is a wheel and axle
400
The face exerted by the machine
What is the output force?
400
an inclined plane wrapped around a cylinder
What is a screw?
400
simple machine made of two circular objects that are fastened together and that rotate about a common axis.
What is a wheel and axle?
400
a knife or ax is an example of this machine.
What is a wedge?
500
Can be determined by multiplying force times distance.
What is the amount of work done on an object?
500
The mechanical advantage of a machine without friction.
What is the ideal mechanical advantage?
500
This type of lever will always multiply force.
What is a second-class lever?
500
A machine that utilizes two or more simple machines.
What is a compound machine?
500
bolts are an example of this simple machine.
What is a screw?
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