← Back to lesson

Period, frequency and rpm

Free notes · JEE Main Physics

Formulas

ω=2πf=2πT=2π⋅rpm60\omega = 2\pi f = \frac{2\pi}{T} = \frac{2\pi \cdot \text{rpm}}{60}

Angular frequency conversions

Worked example

In uniform circular motion, the acceleration of the particle is directed:

  1. Speed is constant but velocity direction changes continuously.
  2. The change in velocity points toward the centre → centripetal acceleration a_c = v²/r toward the centre.

Answer: Toward the centre of the circle