Simply take an eraser, then place a ruler or long thin piece of wood.Then rest a very small item -example-small stone, the slightly push down the clear side of the ruler or wood and thats a lever.
a lever and a wedge make up an ax...............
Lever.
A lever.
The lever and the wedge.
A wedge and lever
Bicycle brakes are usually levers
lever and pulley
lever
a lever and a well with a bucket.
leverwheel and axlewedgescrew
Oh, what a lovely question! A stroller is like a happy little family of simple machines working together. You have wheels and axles for smooth movement, levers for easy steering, and maybe even some gears for folding it up neatly. Each part plays its own special role, just like how every color on our palette adds to the beauty of a painting.
Making a simple sentence is easy.