Speed Of Sound In Rubber Band

You held on to the end of the string and spun the bee around.

Speed of sound in rubber band.

The vibration causes the sound. You can actually see the increase in vibration strength. Speed of sound m sec. Elastic properties relate to the tendency of a material to maintain its shape and not deform when a force is applied to it.

Given that its density is far greater than air however the speed of sound in. One would expect the very small elastic constant to make the speed of sound in rubber far less than other solids. Speed of sound in thin long solid bars is given by young s modulus for rubber y 4 10 n m and density ρ 1 2 or so. To make a softer sound don t pull the string or rubber band back as far.

It s a little annoying if one person has to hold the rubber. You should be able to see the difference in the movement of the string in the two trials. 1545 butyl rubber carbon 100 40. 1522 sea water at 30c.

The rubber band in turn pushes on the nearby air making it vibrate. Sea water at 0c. One of the reasons for this is that the elastic properties are different for different materials. Repeat the experiment and look closely.

Speed of sound in rubber using the above formula 57 7 m sec. As it picked up speed it would start buzzing. By increasing the tension we increase the wave speed and the pitch of the sound made when the string is plucked. Since the vibration causes the sound when the vibration stops the rubber band stops moving the sound also stops.

If we increase the density of the string we decrease the wave speed and the pitch of the sound. When i saw the instructables rubber band contest i remembered a toy that my grandparents had that fascinated me. Even though you can t see the air vibrating your ear can hear it. The speed of sound is also different for different types of solids liquids and gases.

It was a simple cardboard bee a rubber band and a string. Differences in pitch are caused by the speed of vibrations.