Vocab
The use of force to MOVE something.
What is Work?
A wheel with a long rod attached to it is called...
A wheel and Axle.
Simple machines do WHAT to work and force?
Bottle caps use what kind of simple machine?
What are screws?
A unit of force-usually found on a spring scale.
What is a newton?
A big post with threads wrapped around it.
What is a screw?
What simple machine is part of a wedge?
Two inclined planes put together.
The object that makes moving a lever possible.
What is a fulcrum?
A pulley that is latched to a surface and doesn't move is called...
What is a fixed pulley?
Something with a few or no moving parts to apply force.
What is a simple machine?
A bar that pivots on a fixed point.
What is a lever?
1. Lever-To pry things.
2. Screw
3. Wheel and Axle
4. Wedge
A simple machine with a slanted surface
What is an Inclined Plane?
A machine that uses more than one simple machine is called...
What is a compound machine.
To make the work on an inclined plane easier, you have to do two things...What are they?
1. Make the angle less (shallower)
2. Make the ramp longer.
What must be done to a screw to make twisting it easier?
Add more threads to the screw.
A fixed pulley reduces the force needed to move an object. (True/False)
False, it is a movable pulley that reduces the force needed to lift something.
The effort you use to move an object.
What is work?
The name for the object that is being lifted or moved.
What is the LOAD?
Pulleys reduce the force needed to move something, but what is the "price"?
You need more rope to move the item.
What simple machines make up a screw?
Inclined plane and wedge?
All machines have a trade-off. Write in complete sentences to explain a trade-off.Use the words distance, force, and work in your sentence.
Simple machines make work easier, and reduce force. But you have to make the distance longer.
There are several types of force, name at least three...
Push, Pull, and Twisting (Rotational)