1) Compute the angular velocity in rad/s of the crankshaft of an automobile engine that is rotating at 4200rev/min.439.6rad/s

Here's how to convert revolutions per minute (rpm) to radians per second (rad/s):1. **Convert revolutions to radians:** There are radians in one revolution.2. **Convert minutes to seconds:** There are 60 seconds in one minute.So, the conversion factor is .Applying this to the given rotation speed:Angular velocity = Therefore, the angular velocity is approximately rad/s.