Question 1

How do you convert RPM to rad/s?

Accepted Answer

Multiply RPM by π/30 ≈ 0.1047. Example: 1800 RPM = 188.5 rad/s.

Question 2

When to use rad/s vs RPM?

Accepted Answer

RPM for practical motor specs. Rad/s for physics calculations. Engineering may use either.

Question 3

What's the relationship between frequency and wavelength?

Accepted Answer

They're inversely related: wavelength × frequency = wave speed. For sound in air: wavelength (m) ≈ 343 / frequency (Hz).

Question 4

Why use Hz vs RPM?

Accepted Answer

Hz (cycles per second) is universal for waves and oscillations. RPM (revolutions per minute) is more intuitive for rotating machinery and engines.

RPM to Radians per Second Converter

Frequently Asked Questions