Post a New Question

college physics

posted by .

The plastic in a DVD disk will begin to deform at rotations faster than 10,000 revolutions per minute.

How many radians per second is that?

If the disk has a radius of 0.06 m, what is the centripetal acceleration at the edge?

  • college physics -

    To convert rpm to rad/s, multiply by
    (2 pi rad/rev)*(1 min/60 s)
    The Greek symbol omega (usually typed as w here) is usually used for rotation rates in radians per second.

    Centripetal acceleration is R*w^2, where R is the radius.

    You can do the numbers, I'm sure.

  • college physics -

    got it. thanks

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    The moment of inertia of an object depends on the shape of the object, location and orientation of the axis of rotation. For a solid disk, when the disk is rotating about an axis that is perpendicular to the disk and passing through …
  2. College Physics

    A CD has to rotate under the readout-laser with a constant linear velocity of 1.25 m/s. If the laser is at a position 3.2 cm from the center of the disk, what are the revolutions per minute (rpms) of the disk?
  3. college physics

    A CD has to rotate under the readout-laser with a constant linear velocity of 1.25 m/s. If the laser is at a position 3.2 cm from the center of the disk, what are the revolutions per minute (rpms) of the disk?
  4. physics

    A force of 100 N is applied tangentially to a disk of radius 10 cm and mass 0.5 kg. the disk is initially at rest. What is the angular acceleration of the disk?
  5. physics

    A high-speed sander has a disk 8.00 cm in radius that rotates about its axis at a constant rate of 1100 revolutions per minute. Determine the angular speed of the disk in radians per second.
  6. Physics

    A children merry go round in the consist of 300 kg solid horizontal disk of radius 8.5 m. It rotates at a speed of .25 revolution per second while a person of mass 150 km takes a ride at the edge of the disk. How fast will the disk …
  7. Physics

    The figure shows three rotating, uniform disks that are coupled by belts. One belt runs around the rims of disks A and C. Another belt runs around a central hub on disk A and the rim of disk B. The belts move smoothly without slippage …
  8. Physics

    A penny is placed on a disk that is rotating at 2 revolutions per second. The coefficient of friction between the penny and the disk is 0.4. What is the maximum radius at which the penny will stay on the disk?
  9. Trigonometry- ??????

    (The number of times a bicycle tire rotates in a given time period is directly related to the distance traveled in that time period. Consider the following scenarios.) 1. Calculate the angular speed of a bike with 26-inch tires rotating …
  10. Physics

    A high-speed sander has a disk 5.70 cm in radius that rotates about its axis at a constant rate of 1120 revolutions per minute. a.) Determine the angular speed of the disk in radians per second. b.) Determine the linear speed of a …

More Similar Questions

Post a New Question