Show:
Work
Simple Machines
Incline plane
Screw
Wedges
100
What is work?
You do work when you exert a force on an object that causes the object to move some distance.
100
What do simple machines do?
Simple machines change the amount of force you exert or the distance over which you exert the force.
100
What is an incline plane?
An incline plane is a flat sloped surface.
100
What is a screw?
An incline plane wrapped around a cylinder.
100
What is a wedge?
A device that is thick at one end and tapers to a thin edge at the other end.
200
How do you calculate work?
you take work=force x distance.
200
what are the six types of simple machines?
Incline plane, pulley, lever, wheel and axle, wedge, screw.
200
is it true or false that a ramp is an example of a incline plane?
True
200
Is a zipper an example of a screw? Explain.
No. No because a zipper is a wedge.
200
Is a ax an example of a wedge?
Yes.
300
When the force is measured in newtons and distance in meters the SI unit for work is what?
joule
300
What is a lever?
A rigid bar that is free to pivot on a fixed point.
300
Is it true or false that a flat floor is an incline plane?
False.
400
What does the motions directions go in?
horizontal
400
What is a pulley?
A simple machine made up of a grooved wheel with a rope or cable wrapped around it.
500
What is the forces direction?
vertical
500
What is a wheel and axle?
A simple machine made of two circular or cylindrical objects fastened together that rotate around a common axis.