Speed Of Sound In Rubber Band

1450 sea water at 20c.

Speed of sound in rubber band.

Since the vibration causes the sound when the vibration stops the rubber band stops moving the sound also stops. Even though you can t see the air vibrating your ear can hear it. Elastic properties relate to the tendency of a material to maintain its shape and not deform when a force is applied to it. The shear modulus of a string or a rubber band is equal to the tension.

You held on to the end of the string and spun the bee around. 1545 butyl rubber carbon 100 40. You can actually see the increase in vibration strength. The speed of sound is also different for different types of solids liquids and gases.

Given that its density is far greater than air however the speed of sound in. Differences in pitch are caused by the speed of vibrations. You should be able to see the difference in the movement of the string in the two trials. Speed of sound in rubber using the above formula 57 7 m sec.

Repeat the experiment and look closely. 1522 sea water at 30c. Speed of sound m sec. One of the reasons for this is that the elastic properties are different for different materials.

To make a softer sound don t pull the string or rubber band back as far. This is much smaller than the speed of sound in air which is 340 m sec at atmospheric pressure temperature. It s a little annoying if one person has to hold the rubber. 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 rubber band in turn pushes on the nearby air making it vibrate. The vibration causes the sound. It was a simple cardboard bee a rubber band and a string. If we increase the density of the string we decrease the wave speed and the pitch of the sound.

Sea water at 0c. When i saw the instructables rubber band contest i remembered a toy that my grandparents had that fascinated me.