PHYICS

posted by .

a turn table is turing at a rate of 45 rad/sec and comes to rest after 5 second.how many rotation does it make before coming to rest?

  • PHYICS -

    average angular velocity during stop = 45/2 = 22.5 rad/sec
    so
    total angle = 22.5 rad/s * 5 s = 112.5 radians

    112.5 radians / 2 pi radians/revolution
    = 17.9 revolutions

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. college physics (inertia)

    As a result of friction, the angular speed of a wheel changes with time according to dθ/dt = ω0 *e^-(σ*t) where ω0 and σ are constants. The angular speed changes from an initial angular speed of 3.08 rad/s …
  2. college physics (inertia)

    As a result of friction, the angular speed of a wheel changes with time according to dθ/dt = ω0 *e^-(σ*t) where ω0 and σ are constants. The angular speed changes from an initial angular speed of 3.08 rad/s …
  3. college physics (inertia)

    As a result of friction, the angular speed of a wheel changes with time according to dθ/dt = ω0 *e^-(σ*t) where ω0 and σ are constants. The angular speed changes from an initial angular speed of 3.08 rad/s …
  4. physics help?

    A coin with a diameter of 3.30 cm is dropped on edge onto a horizontal surface. The coin starts out with an initial angular speed of 16.1 rad/s and rolls in a straight line without slipping. If the rotation slows with an angular acceleration …
  5. Physics

    The blades of a fan turn at 1250rpm at low speed. When the fan is switched to high speed, the rotation rate increases uniformly to 1750rpm in a period of 3.0sec. What is the average angular acceleration of the blades, in rad/sec^2?
  6. physics

    A coin with a diameter of 2.10 cm is dropped on edge onto a horizontal surface. The coin starts out with an initial angular speed of 13.3 rad/s and rolls in a straight line without slipping. If the rotation slows with an angular acceleration …
  7. physics

    a body is moving with a velocity 96m/s is to be brought to rest in the 16 sec find displacement of body before it comes to rest and also find velocity after 10 th sec
  8. Physics (HEELPPP)

    A coin with a diameter of 1.90 cm is dropped on edge onto a horizontal surface. The coin starts out with an initial angular speed of 14.4 rad/s and rolls in a straight line without slipping. If the rotation slows with an angular acceleration …
  9. physics

    A coin with a diameter of 1.37 cm is dropped on its edge onto a horizontal surface. It starts rolling with an initial angular speed of 10.5 rad/s and rolls in a straight line without slipping. If the rotation slows with an angular …
  10. physics

    A flywheel is rotating at speed of 1200 rpm its angular acclaration is 4 rad/s how many rotation it will be done before coming to rest

More Similar Questions