If a turntable rotates 720 degrees/second, how many revolutions does it make in 1 minute.
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The turntable rotates 720 degrees per second
We need to determine how many revolutions it makes in one minutes.
1 min = 60 second
Also we know that:
1 revolution = 360 degrees.
Then let us convert :
==> (720 degrees/sec) * (60 second/minute) * ( 1 revolution / 360 degrees) = 720 * 60 / 360 ) (degree*second*rev / sec* min *degree)
= 120 revolution / minute
Then the turntable makes 120 revolutions in one minute.
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The degrees by which the turn table rotates in second = 720 degrees.
The degrres in one full rotation = 360 degrees.
Therefore the number of rotations done by the turntable in one second = 720 degrees/360 degrees = 2.
The numbere seconds in one minute = 60.
Therefore the number rotations done by the turntable in one minute @ 2 rotations per second = 60*2 = 120.
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