Let me draw a diagram. If you want to swing the mass around with a lower angular velocity, the string will need to be longer. If you want a shorter string, the mass will have to spin around faster.

Spin Ball: The Physics of Polyester String By Ed McGrogan Feb 03, 2011. ATP London, Great Britain. Brits Katie Boulter, Emma Raducau score wins at Queen’s Club Jun 10, 2025. Facts & Stats.

It is easy to hit a student when releasing the ball. Practice this demonstration in advance. Script. To show circular motion: Hold onto the end of the string. Swing the ball in a vertical path. To ...

As the ball moves, the tension remains perpendicular to the direction of ball. This means that the angle θ is 90 degrees and the cosine of 90 degrees is zero. See?

Oh, balls A record-breaking 34-ball, 12-storey tower with three balls per layer (photo a); a 21-ball six-storey tower with four balls per layer (photo b); an 11-ball, three-storey tower with five ...