Physics

posted by .

1.(a)When a record player is stopped, the turnabble initially rotating at 33.3rpm,slows down and stops 60s.Calculate the angular acceleration of the turnable.(b)a grinding wheel when turned on,accelerates with an agnular acceleration of 50rad/s^2 . How much time is required to attain a final angular velocity of 1800rpm?

Both of these are asking you to use the definition of

angular acceleration=changeinAngularvelocity/time

change the rpm given to angular velocity in radians per sec.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    At time t=0 a grinding wheel has an angular velocity of 26.0 rad/s. It has a constant angular acceleration of 25.0 rad/s^2 until a circuit breaker trips at time t = 2.50 s. From then on, the wheel turns through an angle of 440 rad …
  2. Physics Really Need Help Please

    At time t=0 a grinding wheel has an angular velocity of 26.0 rad/s. It has a constant angular acceleration of 25.0 rad/s^2 until a circuit breaker trips at time t = 2.50 s. From then on, the wheel turns through an angle of 440 rad …
  3. PHYSICS

    A spinning wheel on a fireworks display is initially rotating in a counterclockwise direction. The wheel has an angular acceleration of -3.80 rad/s2. Because of this acceleration, the angular velocity of the wheel changes from its …
  4. Physics

    An electric motor rotating a workshop grinding wheel at a rate of 95 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 2.40 rad/s2. (a) How long does it take for the grinding wheel …
  5. physics

    An electric motor rotating a workshop grinding wheel at a rate of 9.80 101 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 2.00 rad/s2. (a) How long does it take for the grinding …
  6. Mechanics _ physics

    A wheel rotating with an angular velocity of 16rad/sec is slowed to an angular velocity of 4rad/sec by an angular acceleration of 2rad/sec^2.find a. The angle turned in the process of slowing down b. The time required
  7. Physics

    At t=0 a grinding wheel has an angular velocity of 24.0rad/s . It has a constant angular acceleration of 35.0rad/s2 until a circuit breaker trips at time t = 1.90s . From then on, it turns through an angle 436rad as it coasts to a …
  8. Physics

    A potter’s wheel is spinning with an angular speed of 4.5 rad/s. When the potter stops working, the wheel slows down with an angular acceleration of -0.5 rad/s 2. Calculate the angle, in radians, through which the wheel has turned …
  9. Physics

    A record turntable rotating at 33 1/3 rev/min slows down and stops in 36s after the motor is turned off. (a) Find its (constant) angular acceleration in revolutions per minute-squared. (b) How many revolutions does it make in this …
  10. Physics

    A record player rotates a record at 45 revolutions per minute. When the record player is switched off, it makes 5 complete turns at a constant angular acceleration before coming to rest. What was the magnitude of the angular acceleration …

More Similar Questions