Physics

) Joe has a playing time of 74 minutes. When the music starts, the CD rotating at an angular speed of 480 revolutions per minute (rpm). At the end of the music, the CD is rotating at 210 rpm. Find the magnitude of the average angular acceleration of the CD (in rad/s^2)

  1. 👍 0
  2. 👎 0
  3. 👁 193
asked by alexs

  1. ang acceleration= (wf-wi)/time

    change 74 min to seconds
    change rpm to rad/sec (multiply by 2PI/60)

    1. 👍 0
    2. 👎 0
    👨‍🏫
    bobpursley

  2. thanks a lot

    1. 👍 0
    2. 👎 0
    posted by alexs

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    3) Joe has a playing time of 74 minutes. When the music starts, the CD rotating at an angular speed of 480 revolutions per minute (rpm). At the end of the music, the CD is rotating at 210 rpm. Find the magnitude of the average

    asked by Bob on December 21, 2009

  2. Physics

    A certain CD has a playing time of 76 minutes. When the music starts, the CD is rotating at an angular speed of 4.8 102 revolutions per minute (rpm). At the end of the music, the CD is rotating at 2.1 102 rpm. Find the magnitude

    asked by John on March 24, 2008

  3. physivs

    A certain CD has a playing time of 68 minutes. When the music starts, the CD is rotating at an angular speed of 4.8 102 revolutions per minute (rpm). At the end of the music, the CD is rotating at 2.1 102 rpm. Find the magnitude

    asked by Anonymous on December 4, 2010

  4. phy

    A certain CD has a playing time of 72 minutes. When the music starts, the CD is rotating at an angular speed of 4.8 102 revolutions per minute (rpm). At the end of the music, the CD is rotating at 2.1 102 rpm. Find the magnitude

    asked by nn on November 8, 2015

  5. math

    at 7:00am joe starts jogging at 6 mi/h. at 7:10 am ken starts after him. how fast must ken run to overtake joe at 7:30am? If Joe runs at 6 mi/hr for 30 minutes (7:00 to 7:30), his distance traveled is 6 mi/hr x 0.5 hr = 3 miles.

    asked by tina on November 28, 2006

  6. Physics- drwls please help

    A certain CD has a playing time of 80 minutes. When the music starts, the CD is rotating at an angular speed of 4.8 x 10^2 revolutions per minute (rpm). At the end of the music, the CD is rotating at 2.1 x 10^2 rpm. Find the

    asked by Mary on March 14, 2007

  7. Physics

    A certain CD has a playing time of 80 minutes. When the music starts, the CD is rotating at an angular speed of 4.8 102 revolutions per minute (rpm). At the end of the music, the CD is rotating at 2.1 102 rpm. Find the magnitude

    asked by Mary on March 13, 2007

  8. math

    there are 12 men on a basketball team, and in a game 5 of them play at any one time. if the game is 1 hr long and if each man plays exactly the same amount of time how many minutes does each man play? a) 10 b) 12 c) 24 d) 25 e) 30

    asked by Christine on June 29, 2005

  9. physical science

    Joe baked a cake for his mother's birthday. When he removed the cake from the oven, Joe noticed that the cake had not risen. Joe guessed that the baking powder he had used was too old. He designed the following experiment to test

    asked by keisha on January 29, 2012

  10. physics

    A flywheel with a diameter of 1 m is initially at rest. Its angular acceleration versus time is graphed in the figure. (a) What is the angular separation between the initial position of a fixed point on the rim of the flywheel and

    asked by Anonymous on March 20, 2011

More Similar Questions