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.

Even though you can t see the air vibrating your ear can hear it. 1545 butyl rubber carbon 100 40. Repeat the experiment and look closely. To make a softer sound don t pull the string or rubber band back as far.

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. Speed of sound in rubber using the above formula 57 7 m sec. The rubber band in turn pushes on the nearby air making it vibrate.

As it picked up speed it would start buzzing. 1450 sea water at 20c. Sea water at 0c. It s a little annoying if one person has to hold the rubber.

This is much smaller than the speed of sound in air which is 340 m sec at atmospheric pressure temperature. Since the vibration causes the sound when the vibration stops the rubber band stops moving the sound also stops. Differences in pitch are caused by the speed of vibrations. If we increase the density of the string we decrease the wave speed and the pitch of the sound.

The speed of sound is also different for different types of solids liquids and gases. The vibration causes the sound. The shear modulus of a string or a rubber band is equal to the tension. You should be able to see the difference in the movement of the string in the two trials.

Given that its density is far greater than air however the speed of sound in. One of the reasons for this is that the elastic properties are different for different materials. You can actually see the increase in vibration strength. 1522 sea water at 30c.

When i saw the instructables rubber band contest i remembered a toy that my grandparents had that fascinated me. 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.