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 to a stop is 20.1 radians per second squared.

How many complete revolutions does the CD make as it spins to a stop?

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
  1. displacement=wi*time + 1/2 a*t^2

    displacement is in radians, it is what you seek. Wi = 500*2PI/60 rad/sec
    a= -20.1 rad/s^2
    Now for time, which is given.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    A space station, in the form of a wheel 110 m in diameter, rotates to provide an "artificial gravity" of 3.00 m/s2 for persons who walk around on the inner wall of the outer rim. Find the rate of rotation of the wheel (in

  2. TRIG

    A circular power saw has an 8-1/2 inch diameter blade that rotates at 4400 revolutions per minute. a)Find the angular speed of the saw blade in radians per minute. b)Find the linear speed in feet per minute of one of the 24

  3. trig

    A wheel rotates at 100 revolutions per second. find the angle velocity in radians per second.

  4. Trigonometry

    A Ferris Wheel rotates 3 times each minute. The passengers sit in seats that are 25 feet from the center of the wheel. A. What is the angular velocity of the wheel in degrees per minute and radians per minute? B. What is the

  1. algebra

    Sam is playing songs on her mp3 player. She has 7 hip-hop songs, 9 rock songs, and 7 pop songs. If she has the mp3 player play the songs at random without repeating, what is the probability that the first song will be a rock song

  2. trig

    A wheel with a 24-inch diameter is turning at the rate of 32 revolutions per minute. To the nearest inch per minute, what is the linear velocity of a point on the rim?

  3. physics

    A centrifuge in a medical laboratory rotates at an angular speed of 3,550 rev/min. When switched off, it rotates through 54.0 revolutions before coming to rest. Find the constant angular acceleration (in rad/s2) of the centrifuge.

  4. Calc

    A rotating beacon is located 1 kilometer off a straight shoreline. If the beacon rotates at a rate of 3 revolutions per minute, how fast (in kilometers per hour) does the beam of light appear to be moving to a viewer who is 1/2

  1. Precalculus

    Please help...a computerized spin balance machine rotates a 25 inch diameter tire at 480 revolutions per minute. (a) find the road speed in miles per hour at which the tire is being balanced (b) at what rate should the spin

  2. precal

    A wheel with a 22 inch diameter is turning at the rate of 31 revolutions per minute. What is the linear speed of a point on the rim, measured to the nearest inch per minute?

  3. physics

    an astronaut rotates at the end of a test machine whose arm has a length of 10.0m. if the acceleration she experiences must not exceed 5g (g=10m/s^2? what is the maximum number of revolutions per minute of the arm?

  4. Physics

    A bike wheel rotates uniformly through 2 revolutions in 3 seconds. a) what is the period of the wheel's rotation? T=3rev/2s=1.5s b) what is the frequency of the wheel's rotation? (in Hertz) f=1/T =1/1.5 =.666Hz c) what is the

View more similar questions or ask a new question.