It is a pulley that moves in the same direction as the load.
What is a movable pulley?
100
It has two parts.
How many parts does a wheel and axle have?
100
It is a simple machine with one part-a flat, slanted surface.
What is an inclined plane?
100
It is two incled planes back to back.
What is a wedge?
200
It is a bar or plank and a fixed point.
What is fulcrum?
200
It makes it easier to lift a load.
What does a pulley do?
200
One part is a wheel and the other part is a bar that passes through the wheel's center.
What are the parts of a wheel and axle?
200
It is an inclined plane wrapped around a cylinder.
What is screw?
200
It is an inclined plane twisted into a spiral.
What is a screw?
300
It supports the bar and allows it to turn, or pivot?
What does the fulcrum do?
300
The wheel is attached to something. It cannot change position. One end of the rope is passed around the wheel. The other end is tied to a load. Pulling the rope lifts the load.
What is a fixed pulley?
300
Yes, the door is the wheel; the shaft is the axle.
Is a door a wheel and axle? Explain.
300
A wedge and a screw.
What are two types of inclined planes?
300
It carves in a circular motion.
What does a screw do?
400
It has its fulcrum between the load and the effort force.
What is a first-class lever?
400
fixed pulley, movable pulley and fixed and movable pulleys
Name three pulleys?
400
It is a wheel and axle.
What type of simple machine is steering wheel?
400
A wedge is a pair of inclined planes; a screw is an inclined plane twisted into a spiral.
How are wedges and screws related to an inclined plane?
400
Both a screw and a knife are inclined planes.
How are a knife and a screw similar?
500
It has its fulcrum at the end. The load is in the middle.
What is a second-class lever?
500
The movable pulley decreases the effort force needed to move a load.
Why would you want to use a movable pulley to lift a heavy load?
500
Simple machines lose less energy to friction because they have fewer parts.
Why are simple machines more efficient?
500
It holds weight.
What does an inclined plane hold?
500
lever, a pulley, a wheel and axle, an inclined plane or ramp, a wedge, a screw