How Is Angular Velocity Calculated in This Classical Mechanics Scenario?

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SUMMARY

The discussion focuses on calculating the angular velocity of a particle in a two-dimensional motion scenario, where the initial velocity is defined as u = -V0 i + V0 j. The angular velocity is expressed as ω = d(θ)/dt, and the particle's velocity in polar coordinates is given as V = V0 cos(θ) i + (V0 - V0 sin(θ)) j. The conclusion drawn is that the angular velocity at the origin can be determined using the formula v0(cos(θ)/r), while the radial velocity is represented as -V0(1 - sin(θ)).

PREREQUISITES
  • Understanding of polar coordinates and their relationship to Cartesian coordinates.
  • Familiarity with angular velocity and its mathematical representation.
  • Knowledge of basic kinematics, specifically velocity components in two dimensions.
  • Ability to differentiate functions with respect to time.
NEXT STEPS
  • Study the derivation of angular velocity in polar coordinates.
  • Learn about the relationship between linear and angular velocity in classical mechanics.
  • Explore examples of two-dimensional motion and their implications in physics.
  • Investigate the effects of varying angular velocity on particle motion.
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Students studying classical mechanics, physics educators, and anyone interested in understanding angular motion and its calculations in two-dimensional systems.

vrinda mukund
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Homework Statement


A particle has a velocity u = -V0 i + V0 j and position (d,0) at t=0. At any time t its position in polar coordinates is (r,theta) and velocity V = V0 cos theta i + (V0-V0sin theta) j. At t =t, angular velocity of the particle at the origin will be -----------------



Homework Equations



angular velocity w = d(theta)/dt


The Attempt at a Solution



actually i didnt understand the question itself. why these two velocities are given.
 
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The particle is moving in two dimensions.

There is vx = dx/dt and vy = dy/dt. Now if one writes x = r cos θ, and y = r sin θ, then try dx/dt and dy/dt, what is the result?

Also think about ω = dθ/dt, and θ = ωt + θo.

Is ω costant? Is u constant?
 
i feel that U is a constant as no variables appear in the expression for u. nothing is mentioned about w in the question. the answer should be v0(cos theta)/r.
the radial velocity of the patricle about the origin should be -V0(1-sin theta)
 

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