math

posted by .

a helicopter blade spins 775 times in 3 minutes. find the rate of the revolutions per second.

  • math -

    divide 775 by 3

  • math -

    Enough, Jessica!!

    The question asks for the revolutions per second, not per minute.

    3 * 60 = 180 seconds in three minutes.

    775/180 = ______ revolutions per second.

  • math -

    there are 180 seconds in3 minutes

    so the number of revolutions/sec = 775/180
    = appr 4.3 rotations/sec

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    A CD rotates at 500 (revolutions per minute) while the last song is playing, and then spins down to zero angular speed in 2.60 seconds with constant angular acceleration. The magnitude of the angular acceleration of the CD, as it spins …
  2. college physics

    The blade in a food processor spins at 1700 rpm. After the machine is turned off, the blade comes to a stop in 3.7s. How many revolutions does it make during this time, assuming constant angular deceleration?
  3. Physics

    A helicopter propeller blade starts from rest and experiences a constant angular acceleration of 25.0 rad/s2. Find the speed of a point on the blade 4.00 m from the axis of rotation when the blade has completed 20 revolutions.
  4. 7 grade math

    a helicopter blade spend 775 times in 3 mintues find the rate in revolutions per second
  5. physics

    A helicopter blade spins at 110 revolutions per minute. Its tip is 5.50 m from the center of rotation.
  6. math

    Assuming that a table saw blade has a diameter of 12 inches and spins at 3450 revolutions per minute (RPMs), use the unit conversion techniques you have learned from the material in 2-A to determine how fast the tip of the teeth of …
  7. math

    Assuming that a table saw blade has a diameter of 12 inches and spins at 3450 revolutions per minute (RPMs),determine how fast the tip of the teeth of the saw blade are traveling in miles per hour.
  8. math

    Assuming that a table saw blade has a diameter of 12 inches and spins at 3450 revolutions per minute (RPMs),determine how fast the tip of the teeth of the saw blade are traveling in miles per hour. Answer: 3450/12= 287.5 RPMs 287.5 …
  9. Trig

    A fan makes 3 revolutions per second. The blades are 21 inches long. How do I find the angular velocity of a fan blade?
  10. college

    A ceiling fan has 15 -inch blades (so the radius of the circular fan is 15 inches). Suppose the fan turns at a rate of 60 revolutions per minute. (a) Find the angular speed of the fan in radians per minute. (b) Find the linear speed …

More Similar Questions