Why do Squash balls bounce higher when it is heated for a certain amount of time ?

Question

Please refer to scientific knowledge when answering this question !!!!

Answer 1

Squash balls are hollow balls with a thick rubber skin. When cold, it takes work to deform the thick rubber skin, which tends to be inelastic. That is kinetic energy lost, being dissipated into heat in the skin. After the skin is sufficiently warmed and becomes more flexible, it takes less work to deform it, and thus the internal air pressure takes over and stores kinetic energy more efficiently as potential energy, which is returned to the ball as kinetic energy as it bounces back up.

Having sufficiently high internal pneumatic pressure helps reduce the need of skin deformation, which is why most sports pneumatically filled balls work best when there's sufficient pressure in them. However, the difference in pressure in a squash ball from mild heating isn't the major contributing factor, since the squash skin is relatively thick. For balloons, on the other than, the situation is reversed.

Answer 2

Squash Ball Warmer

Answer 3

The air inside the balls expand, causing a higher pressure on the inner side of the rubber walls. When bounced, this causes the rubber walls to push out with more force, thus causing the ball to bounce higher.

Answer 4

As the air inside the ball heats up, the pressure increases, so the ball bounces higher.

Answer 5

That's an interesting question!