How Do You Calculate Angular Momentum in a Two-Particle System?

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SUMMARY

The discussion focuses on calculating angular momentum in a two-particle system connected by a massless string. The system consists of two masses, m1 and m2, with m1 projected at speed v0 perpendicular to the string of length L. The center of mass speed and angular speed about the center of mass are derived, along with the linear speeds of the individual masses post-impact. The relationship between tension in the string and the motion of m2, which follows a cycloid, is also highlighted as a relevant consideration.

PREREQUISITES
  • Understanding of angular momentum and its calculation in physics.
  • Knowledge of center of mass concepts and calculations.
  • Familiarity with the principles of tension in strings and forces in motion.
  • Basic mechanics involving two-body systems and their interactions.
NEXT STEPS
  • Study the principles of angular momentum in two-particle systems.
  • Learn how to calculate the center of mass for multi-body systems.
  • Explore the dynamics of tension in strings and its effects on motion.
  • Investigate the properties of cycloidal motion and its applications in physics.
USEFUL FOR

Students and educators in physics, particularly those studying mechanics and angular momentum, as well as anyone involved in solving complex two-body problems in classical mechanics.

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Homework Statement



Two particle of mass m1 and m2 are connected by an inextensible and massless string of length L. The system is placed on a smooth and horizontal plane with the string being kept tight. Mass m1 is projected along a direction which is normal to the string and the speed is v0.
a). Find the speed of the center of mass of the system and the angular speed of the system about its center of mass.
b).Hence, find the linear speeds of the individual masses just after the attack.


Thank you in advance for the help!
 
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Weird question.

The answer to part b) is effectively given in the question, and is needed
to answer part a).

Why not ask for the tension in the string, and show that m2 follows a cycloid?
 

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