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Angular quantities: the complete set

Free notes · JEE Main Physics

Formulas

s=rθ, v=rω, at=rαs = r\theta,\ v = r\omega,\ a_t = r\alpha

The linear-angular bridge

Worked example

A disc's angular position is θ = 2t² rad. Find its angular velocity at t = 3 s.

  1. ω = dθ/dt = 4t.
  2. At t = 3: ω = 12 rad/s.

Answer: 12