Enhancing Ball Mass in Air Jet Experiments: Tips and Techniques

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The discussion focuses on enhancing the mass of a ball used in air jet experiments while maintaining a consistent air jet velocity of 20 m/s. Suggestions include using paint to increase the mass of a 2g Ping-Pong ball, although this would also increase its diameter. Alternatives like hollow spheres with varying internal diameters and squash balls are proposed, with the latter expected to gain less height due to increased mass. The participants discuss the implications of mass on height, referencing the equation F=ma to explain the relationship between upward and downward forces. Maintaining equal diameters among different balls is emphasized as crucial for accurate comparisons.
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Monitoring the height a ball gains in an air jet.

Using Ping-Pong Balls and I'd like to keep the air jet velocity (20ms) while varying the mass of the ball.

The ball is currently 2g, I'm looking to add another gram to this figure. I thought about paint, does anybody have any other suggestions ?

I'm aware that this will possibly disregard the results acheived with the ball measured at 40mm diameter because paint will increase the diameter but I can't think of other methods that could increase mass without varying diameter.

[?]
 
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Use hollow sphere's and vary the ID.

JMD
 
ID ?
 
Internal diameter.

cookiemonster
 
ta :)
 
I suppose I could also use a squash ball, I'd imagine a 20ms air jet will provide enough upward force to allow the ball to gain and maintain a height.

I'd expect the squash ball to gain less height than the ping pong ball. What equation could I use to describe this height difference?

F=ma ? Assuming both balls had the same diameter the upward force acting on both the balls would be equal but obviously the downward force will increase due to more mass ?

Also any other ideas for balls to be used? Its surely very important that the different balls have an equal diameter?
 

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