Speed Of Sound In Rubber Band

1450 sea water at 20c.

Speed of sound in rubber band.

Speed of sound m sec. The rubber band in turn pushes on the nearby air making it vibrate. It s a little annoying if one person has to hold the rubber. You held on to the end of the string and spun the bee around.

If we increase the density of the string we decrease the wave speed and the pitch of the sound. This is much smaller than the speed of sound in air which is 340 m sec at atmospheric pressure temperature. One of the reasons for this is that the elastic properties are different for different materials. Given that its density is far greater than air however the speed of sound in.

When i saw the instructables rubber band contest i remembered a toy that my grandparents had that fascinated me. One would expect the very small elastic constant to make the speed of sound in rubber far less than other solids. 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.

1545 butyl rubber carbon 100 40. You can actually see the increase in vibration strength. To make a softer sound don t pull the string or rubber band back as far. Differences in pitch are caused by the speed of vibrations.

Repeat the experiment and look closely. The speed of sound is also different for different types of solids liquids and gases. As it picked up speed it would start buzzing. Speed of sound in rubber using the above formula 57 7 m sec.

1522 sea water at 30c. You should be able to see the difference in the movement of the string in the two trials. Elastic properties relate to the tendency of a material to maintain its shape and not deform when a force is applied to it. 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.

The vibration causes the sound. It was a simple cardboard bee a rubber band and a string.