What is the angular velocity of a shaft rotating at 300rpm in radians/second?
- 10pi radians/second.
- 2pi radians/second.
- 5pi radians/second.
Explanation
Angular velocity in rad/s is found from rpm by multiplying by 2pi and dividing by 60: omega = 300 x 2pi / 60 = 10pi rad/s. The 5pi answer forgets the factor of two, and 2pi would correspond to just 60 rpm.
romeshkunder asking:
pls explain
Community Comments (2)
T
trap2307 Posts: 43 14.09.2013 / 16:45
300*2/60=10
300r/1m=600pi/60sec
1r=2pi
1m=60sec
300r/1m=600pi/60sec
1r=2pi
1m=60sec
D
dimky Posts: 514 14.09.2013 / 20:50
1 revolution per minute = 2Ï€ radians per minute
300 revolutions per minute = 5 revolutions per second
So 5 revolutions = 5 * 2Ï€ radians = 10Ï€ radians.
300 revolutions per minute = 5 revolutions per second
So 5 revolutions = 5 * 2Ï€ radians = 10Ï€ radians.
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