THEY ROLL AND FOUND ON BIKES,CARS ALSO WHEELBARROWS

CAN BE USED TO SPLIT THINGS APART OR HOLD THINGS OPEN

HOLD THINGS TOGETHER IT'S MADE UP OF AN INCLINED PLANE WRAPPED AROUND AND CYLINDER

USED TO LIFT WEIGHT WHICH CAN BE LOCATED NEAR CENTER,END OR END OF SIMPLE MACHINE

A ROPE,WHEEL WITH A GROOVE IN IT CAN PULL UP OR DOWN TO LIFT WEIGHT

A HEAVY OBJECT COULD BE BE ROLLED INSTEAD OF LIFTING STRiGHT UP

HANNAH HECKER