a nail is a wedge
Wedge
A wedge, or rather, a combination of an infinite number of wedges arranged in a circle.
What kind of simple machine is a garage door
It's a simple lever.
What kind of simple machine is a garage door
pulley
Wedge
A wedge, or rather, a combination of an infinite number of wedges arranged in a circle.
A pulley isn't a kind of simple machine, it is a simple machine
A train is not a simple machine.
IT's NOT A SIMPLE MACHINE!
its not a simple machine
a needle does is a machine
It is a simple lever.
Rope is not a simple machine on its own, it's a simple machine on a wheel and axle, then it's a pulley.
What kind of simple machine is a garage door
a compound machine is a combination of simple machines
lever