Finding angular velocity -- circular motion

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SUMMARY

The discussion focuses on calculating the angular velocity required for a mass m1 (0.200 kg) to maintain circular motion while supporting another mass m2 (0.300 kg) hanging from the same string. The radius of the circular motion is 0.500 meters. Key equations include centripetal acceleration (ac = v^2/r) and angular velocity (ω = v/r), alongside Newton's Second Law (F = ma) to establish equilibrium between the forces acting on both masses. A clear diagram of the forces involved is recommended for better understanding.

PREREQUISITES
  • Understanding of centripetal acceleration and its formula (ac = v^2/r)
  • Familiarity with angular velocity and its relationship to linear velocity (ω = v/r)
  • Knowledge of Newton's Second Law (F = ma)
  • Ability to interpret and create force diagrams for equilibrium analysis
NEXT STEPS
  • Study the derivation of centripetal acceleration and its applications in circular motion
  • Learn how to calculate angular velocity in various physical scenarios
  • Explore equilibrium conditions in systems involving multiple masses and forces
  • Practice drawing and analyzing free-body diagrams for complex motion problems
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone interested in understanding the dynamics of circular motion and force equilibrium in mechanical systems.

Kevin Lester
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Homework Statement


A mass m1= 0.200 kg is tied to a string with enough slack to swing around someone's head with a radius of 0.500 meters. What angular velocity must m1 have in order to hold up a mass m2 hanging from the other end of the string if m2 is 0.300 kg?

Homework Equations


ac= v^2/r centripetal acceleration , angular velocity=rw^2 also use Newton's Second Law to find F=mac?

The Attempt at a Solution


I am not sure where to start but i would have to say to use Newton's Second Law to find
 
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Hello Kevin, :welcome: :smile:

It would help if you make a clear drawing of the situation; perhaps you already did so. Can you post it ? There is the force needed to keep m1 in its circular orbit, the force to keep m1 from falling on the floor and there is the force needed to keep m2 from falling on the floor. Your start is that they have to be in equilibrium.
 

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