RPM

An electric motor makes 3,000 revolutions per minutes. How many degrees does it rotate in one second?

Correct result:

c =  18000 °/s

Solution:

$$\begin{gathered} a=3000\text{ RPM } \\ b=a\mathrm{/}60=3000\mathrm{/}60=50\text{ RPS } \\ c=b\cdot 360=50\cdot 360=18000^{\circ }\text{/s} \end{gathered}$$

Try another example

Showing 0 comments:

Related math problems and questions:

• Motor physics
  Car traveling at 130 km/h on the highway. Pulling power of the motor is 8 kN. Determine engine power in kW.
• Clock Tower
  What angle is betwenn hands on Clock Tower when show 17 hours and 35 minutes?
• Cindy run
  If it takes 1/3 of an hour for Cindy to run 3/5 of a mile. How many miles does she run in 1 hour?
• The tram
  The tram is moving with acceleration a = 0.3m/s2. How long it will pass the first meter of track? How long does it take 10 meters. What is its speed at the end of the 10 meters track?
• Engine pulley
  The engine has a 1460 rev / min (RPM). Disc diameter is 350 mm. What will be the disc peripheral speed in RPM? Pulleys on the engine has diameter 80mm, on a disc has diameter 160mm.
• Two trains
  Two trains go at each other. First at speed 40 km/h and the second at speed 60 km/h. At what distance will be 30 minutes before they will meet?
• Car loop
  The toy car runs at an average speed of 2 m/s. In a minute, it will pass the entire circuit five times. How long is the loop?
• Sputnik
  The first Earth satellite was flying at speed 8000 m/s. At that rate he circled the earth in 82 minutes. Jet flies at an average speed 800 km/h. How long would it take circle the earth round?
• Earth and Sun
  Earth is 150 million km away from the Sun, 300,000 km of sunlight travels in 1 second. How long will the light come from the Sun to the Earth?
• Time clock
  What is the angle of the hour hand and the minute hand, if it is 0:40?
• Passenger car
  Passenger car travels 1 km for 2.3 minutes, a truck during a 50 seconds long. How much is the speed of the truck less?
• Constant motion
  The car has undergone constant motion 120 km in 1 hour 30 minutes. Determine its average speed. Determine how long car drove in the first 20 minutes and 50 minutes from the start of the move.
• Sound speed in Earth
  Through the surface layers of the Earth, sound propagates 13 times faster than through air. During the geological survey, the charge exploded 1.7 km from the measuring station. How long does it take between the vibration of the soil at the measuring point
• Weather
  Weather. At 5:00 a. M. , the temperature was 28°C and at noontime it rose by 9°C. By 4:00 p. M. , it dropped 3°C and by nighttime it was 4°C less. What is the room temperature this time?
• Bob traveled
  Bob traveled 20 meters to Dave's house. He arrived in 3 minutes. What was his average speed for the trip.
• Cruise liner
  Cruise liner runs along the river between points A and B. The journey downstream takes 40 minutes 1 hour upriver. The flow rate of the river is 3 km/h. What is the speed of cruise liner?
• Wheel
  How many times turns the wheel of a passenger car in one second if car run at speed 100 km/h. Wheel diameter is d = 62 cm.