strike it with another object
A piano is both a percussion instrument and a string instrument. Inside a piano, tiny hammers strike strings to make pitches. It is a string instrument in that the strings are what vibrate to make the sound, but it is a percussion instrument in that it has a keyboard and strikes to make sound.
The piano is a percussion instrument because it has hammers inside it which strike the strings. A percussion instrument is one where something is hit to make a sound.
The piano is a percussion instrument because it has hammers inside it which strike the strings. A percussion instrument is one where something is hit to make a sound.
To play percussion, simply hit something to make noise.
Maracas are a percussion instrument, because they don't contain strings and you don't blow air to make a sound.
A quieter one.
Most percussion instruments are struck. This can be done with a hand, stick, mallet, or other part of the instrument.
Percussion - example - Drums: these instruments are struck with something such as the hand, or a stick or hammer to make the sound. Woodwind- Example - Clarinet: these instruments have a reed to vibrate to make the sound. Brass- example - Trumpet: these instruments make sound by the vibrating lips of the player. String - example - violin : these instruments have strings that rubbed with a bow or plucked to make a sound There are also electronic instruments such as the theremin and one might consider the human voice to be an instrument.
An idiophone is any musical instrument which creates sound primarily by way of the instrument's vibrating, without the use of strings or membranes. Therefore, all tuned percussion instruments (primarily keyboard instruments like marimbas, xylophones, vibraphones, etc) are idiophones. Even woodblocks, maracas, and triangles are considered idiophones. Basically any percussion instrument that isn't a "drum" is an idiophone.
They have to be hit to make sound.
Piano is a tough instrument to categorize. Some say "percussion" because you create sound by striking the instrument. Some say "string" because vibrating strings is how the sound is made. If I had to choose between them I'd choose "string instrument" because the reasoning for it being a percussion instrument, IMO, is not very sound. Yes you strike the instrument to make sound, but it's not you making the sound - it's the hammer striking the strings much like the dulcimer. Apply the "percussion" argument to other keyed instruments and you can see more clearly how it's a misnomer. Is the organ a percussion instrument because you're striking the keys? And then there's electronic keyboards - are they percussion instruments? See how we're getting really far out on a limb to rationalize calling piano a percussion instrument. This, and the other examples I gave, is why I like to use "keyboard instrument" as a classification all its own. It allows for an accurate description of how you make sound with the instrument, much like the definition of percussion (striking a membrane or solid object). I like to tell people that if they don't like the idea of "inventing" a new category, then call it a string instrument because that's what it is! :)
Marimba is a part of the percussion family because it is being hit in order to make a sound.