Machines Flashcards
What do we call a simple machine that consists of a rod that pivots around a point?
Lever
The point around which a lever pivots?
Fulcrum
The shaft around which a wheel rotates?
Axel
What is a spiral shaped inclined plain called?
Screw
A machine that increases the force applied to a task?
Force multiplier
A lever where the fulcrum is between the load and the effort?
First class lever
Where the fulcrum is at on end and the effort is at the other?
Second class lever
What is a lever where the effort is in the middle?
Third class lever
What type of machine where it requires a small amount of effort and a large movement of load?
Speed multiplier
First class, second class, third class.
1st-Spoon and see saw
2nd-Wheel barrow and garlic crusher
3rd- all bats and body parts
Centre of wheel and axle
Axle
What does a single pulley do?
Changes the direction of the effort
The more pulleys you use, what decreases and increases?
The effort decreases and the distance is bigger
How did the Egyptians move the gigantic blocks?
They used the inclined planes and could have used pulleys or wheels and axle
When we use a block and tackle what do we give up to use less effort?
Distance
