an airplanes propeller completes one revolution in 65ms. a)what is the angular speed in rpm? in rad/s?

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an airplanes propeller completes one revolution in 65ms. a)what is the angular speed in rpm? in rad/s?

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AL2006id AL2006id · Answer 1

AL2006id AL2006id

-- We already know the rate of revolutions per time ...
it's 1 revolution per 0.065 sec. We just have to
unit-convert that to 'per minute'.

(1 rev / 0.065 sec) x (60 sec / min) = (1 x 60) / (0.065) = 923 RPM (rounded)
_______________________________

-- 1 revolution = 2π radians

(2π rad) / (0.065 sec) = (2π / 0.065) = 96.66 rad/sec (rounded)

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