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How many time does a hour hand of a clock rotate in the month of September?
60 times !
How many degrees minutes hand rotate in 3 hours?
The minute hand of a clock completes one full rotation (360 degrees) every hour. Therefore, in 3 hours, the minute hand would rotate 3 times. This means it would rotate a total of 3 x 360 degrees, which equals 1080 degrees.
A helicopter blade rotates 770 times in 2 minutes find the rate in rotation per second?
In 1 minute it will rotate half as many times = 385. Since is minute is 60 seconds then the rate is 385/60 per second = 6.41666.
A gear rotates 60 times every 25 minutes how many times will it rotate in 10 minutes?
60 / 25 = 2.4 RPM (Revolutions per Minute) 2.4 X 10 = 24 RPM
If the motor makes 400 revolutions every minute how fast does the wheel rotate in RPM?
That depends on the relative sizes of the gear shafts used to transmit power from the motor to the wheel. For instance, if they were the same size, and no gears in between, then the wheel would rotate 400 times a minute (RPM), which is 6.66 times a second. But usually gears transmit power in such a way that the wheel rotates slower than the motor (less RPM) but with more power.
