The piano is considered a tuned percussion instrument.
phone books
inclined plane
how to make a simple model piano out of cardboard
The kind of sound that a piano makes is melodic. There are different voice effects that can be found on the modern electric pianos.
string and percussion
well it is a lever bacause a lever is used to adjust things
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
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.
You could use a ramp as a simple machine to move the piano up the stairs. By tilting the ramp against the stairs at a gentle angle, you can roll the piano up the ramp instead of lifting it directly. This reduces the force needed to move the piano and makes it easier to transport up the stairs.
a compound machine is a combination of simple machines
well it is a lever bacause a lever is used to adjust things
lever
lever