Pulleys can be used to make a ( small / large ) force lift a larger load.
small
A _______ is a wheel or a collection of wheels over which a rope is looped.
pulley
A pulley with ___________ wheel and a rope helps you change the direction of the lifting force.
a single / one
True or False : The more wheels a pulley has, the more it reduces the force needed to lift the weight.
True
True or False : The more wheels you have in a pulley , the more force you need to apply.
False
The more wheels you have in a pulley , the ________ rope you need to use.
longer
Gears can be used to change the speed, ________ or direction of motion.
force
True or false : The larger wheel in gear turns faster.
False
True or false: When two gears are connected, they always turn in opposite directions.
True
Levers can be used to make as small force lift a ( smaller / larger ) load.
larger
Levers were used in ancient Egypt to lift stones to construct _________.
the pyramids
The distance between the ________ and the place where the person pushes affects how easy or hard it is to lift a load with the lever.
pivot
Is this pulley or gear or lever?
Pulley
Is this pulley or gear or lever?
Pulley
