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Example 1. A cylinder with a 2.5 ft radius is rotating at 120 rpm. (a) Give the angular velocity in rad/sec and in degrees per second. (b) Find the linear velocity of a

## Example 1. A cylinder with a 2.5 ft radius is rotating at 120 rpm. (a) Give the angular velocity in rad/sec and in degrees per second. (b) Find the linear velocity of a

Revolutions per minute is the number of turns in one minute. It is a unit of rotational speed or Computer hard drives typically rotate at 5,400 or 7,200 rpm (90 or 120 Hz), the most common speeds for the ATA or SATA-based drives in  Frequency in hertz (Hz) to angular velocity in radian per second (rad/s) calculator and how to convert. Example 1. A cylinder with a 2.5 ft radius is rotating at 120 rpm. (a) Give the angular velocity in rad/sec and in degrees per second. (b) Find the linear velocity of a  17 Nov 2018 Correct Option (d) 4π rad/s. Explanation: 120 rev / min = 120 x 2π/60rad/sec = 4π rad/sec  Units of rad/sec. Angular Problem: A disk, initially rotating at 120 rad/s, is slowed down with a constant acceleration of speed of 100 rev/min. If the belt does