Release Ball to Fall Through Hole on Circular Platform

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SUMMARY

The discussion focuses on calculating the optimal release time for a ball falling through a hole on a spinning circular platform. The platform has a diameter of 0.67m and completes one revolution every 2.5 seconds. The ball, initially held 1.3m above the platform, falls at a speed of 1.8 m/s. Participants emphasize the need to calculate the fall time and the corresponding angular displacement of the platform during that time to determine the precise moment for release.

PREREQUISITES
  • Understanding of basic physics concepts such as gravity and motion.
  • Knowledge of angular velocity and its calculation.
  • Familiarity with kinematic equations for free fall.
  • Ability to interpret and create diagrams for motion problems.
NEXT STEPS
  • Calculate the time taken for the ball to fall 1.3m using the formula for free fall.
  • Determine the angular velocity of the platform in radians per second.
  • Calculate the distance the platform rotates during the fall time.
  • Explore similar physics problems involving rotational motion and projectile dynamics.
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone interested in solving motion-related problems involving rotational dynamics and free fall.

dralion87
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A Ball Is Held Above A Spinning Circular Platform. The Ball Is 1.3m Above The Circular Platform That Has A Diameter Of .67m And Makes One Complete Revolution In 2.5 Seconds. If The Platfom Has A Hole On The Edge Where The Fall Can Get Through And The Ball Falls At 1.8 M/s...when Should The Ball Be Release In Order To Go Through The Hole?
 
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This belongs on the homework questions section, and you should make an attempt at the solution before asking for too much help. (Hint, think about the time taken for the ball to fall, and how much the disk will spin in that time).

V
 
i have made a try i even made a drawing but its still hard...
 
Well, calculate t, the time taken for the ball to fall. Then work out how far the disk will spin in that time.

V
 

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