Centrifugal force spinning Basketball

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  • Thread starter nick200000
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  • #1
nick200000
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Hi, Looking for Centrifugal force on water droplets on my spinning Basketball at 33 RPM, 45 RPM and 78 RPM
 

Answers and Replies

  • #2
Baluncore
Science Advisor
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Welcome to PF.

It appears the stippled surface of the ball holds the droplets in position, so they do not move during rotation. Maybe drops stick to the worn tip of the bump or to contamination of the surface between bumps. That surface roughness, and attraction, is clearly strong enough to counter gravity.

A droplet near the equator or the pole will not be expected to migrate across the surface when the ball is spun. Near the equator, the force would tend to lift the droplet off the surface. But the rate of rotation, required to break free, would need to be greater than 78 RPM before overcoming the surface tension and the bond with the ball material.

It might help if we knew what you were trying to disprove with the experiment.
 

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