Question 1

How do you convert RPM to rad/s?

Accepted Answer

Multiply RPM by 2π/60. For example, 60 RPM = 60 × 2π/60 = 2π ≈ 6.283 rad/s.

Question 2

What is angular velocity?

Accepted Answer

Angular velocity measures how fast an object rotates. It is typically expressed in radians per second (rad/s) or revolutions per minute (RPM).

Question 3

What are typical rotational speeds in everyday life?

Accepted Answer

Clock second hand: 0.1 RPM (6°/s). Washing machine spin: 800–1,600 RPM. Car engine idle: 600–1,000 RPM. Hard drive: 5,400–7,200 RPM. Gas turbine: up to 30,000 RPM.

Question 4

What is the relationship between rps and rev/s?

Accepted Answer

They are the same unit: 1 rps (revolution per second) = 1 rev/s = 2π rad/s ≈ 6.283 rad/s. Both denote one complete rotation per second.

RPM to Degree per second

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