What simple machines are related to the inclined plane?
Wedge and Screw
100
A seesaw is an example of a lever. Explain.
Because it is free to rotate on the fulcrum.
100
What is a wedge?
A device that is thick at one end and tapers to a thin edge at the other end.
100
What is a wheel and axle made up of?
Two circular or cylindrical objects fastened together.
200
What is work measured by?
Work is measured by joules.
200
An inclined plane is a ____, ______ _______. (3 words)
Flat, sloped surface
200
A lever is made up of a _____ ___. (2 words)
Rigid bar
200
How is a wedge's mechanical advantage solved?
You divide the length by the width.
200
A pulley is a simple machine made of a grooved wheel with a ____ or _____ wrapped around it.
1. Rope
2. Cable
300
What must be happening in order to be doing work?
The force you exert(apply) must be in the same direction as the object's motion.
300
An inclined plane allows your input force to be exerted over a longer ________. (1 word)
distance
300
A lever is a rigid bar that is free to pivot, or ______, on a fixed point. (1 word)
Rotate
300
If the wedge is longer and thinner than it will have a greater __________ _________. (2 words)
mechanical advantage
300
Just like a wedge, a screw is a simple machine that is related to the ________ _____. (2 words)
Inclined plane
400
Is carrying your backpack to school work? Explain?
No, because when you carry an object you exert an upward force to hold the object so it does not fall to the ground. The motion however is in the horizontal direction. Since the force is vertical and the motion is in the horizontal direction, you don't do any work on the object as you carry it.
400
Inclined planes are determined by their __________ _________. (2 words)
Mechanical advantage
400
The fixed point that a lever pivots around is called the _______. (1 word)
Fulcrum
400
A wedge is similar to an ________ _____. (2 words)
Inclined plane
400
***Daily Double***
What do machines do?
1. Machines make work easier.
2. Machines change the amount of force you exert or the distance over which you exert the force.
500
When you push a car that is stuck in the snow and it doesn't move, are you doing any work? Explain?
No, because no matter how much force is exerted, you are not doing any work.
500
The ______ and ______ make up the mechanical advantage. (2 words)
Length and height
500
The center of a lever is the _______. (1 word)
Fulcrum
500
A wedge's mechanical advantage is similar to an ________ _____. (2 words)
Inclined plane's
500
What are the six simple machines?
Incline plane, pulley, lever, wheel and axle, wedge, and screw.