Physics

posted by .

A bicycle is turned upside down while its owner repairs a flat tire. A friend spins the other wheel and observes that drops of water fly off tangentially from point A. She measures the heights reached by drops moving vertically (see figure). A drop that breaks loose from the tire on one turn rises vertically 0.54 m above the tangent point. A drop that breaks loose on the next turn rises 0.47 m above the tangent point. The radius of the wheel is 0.44 m. Neglecting air friction and using only the observed heights and the radius of the wheel, find the wheel's angular acceleration (assuming it to be constant).
____ rad/s2

  • Physics -

    The wheel is decelerating in angular velocity. If the drops rise a distance H, they were released with a velocity V such that
    V = sqrt(2gH)
    For turn 1, V1 = 3.255 m/s
    Fot turn 2, V2 = 3.037 m/s
    The average wheel velocity between the release of the two drops is
    Vav = 3.146 m/s.

    The elapsed time between release of the two drops is
    T = 2 pi R/ Vav = 0.88 s

    The angular acceleration rate is
    (1/R)(V2 - V1)/T = __ rad/s

  • Physics -

    Thank you for helping! got the answer correct (:

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    A bicycle is turned upside down while its owner repairs a flat tire. A friend spins the other wheel and observes that drops of water fly off tangentially from point A. She measures the heights reached by drops moving vertically (see …
  2. math

    The wheel on a child's bicycle is 48 cm in diameter. To test the strength of the tire, William lifts the back wheel 1 m from the ground and spins it at 36 turns/min. He attached a blue sticker to the bottom of the tire beforehand. …
  3. Physics/Calculus

    At a county fair, a boy and two friends bring their teddy bears on the giant Ferris wheel. The wheel has a diameter of 14.8 m, the bottom of the wheel is 1.8 m above the ground and its rim is moving at a speed of 1.0 m/s. The boys …
  4. Physics

    a bicycle turned upside down whiles owner repairs a flat tire. A friend spins the other wheel, of radius R, and observed that drops of water fly off tangentially. She measures the height reached by drops vertically. A drop that breaks …
  5. PHYSICS

    A bicycle is turned upside down while its owner repairs a flat tire. A friend spins the other wheel and observes that drops of water fly off tangentially. She measures the heights reached by drops moving vertically (see figure). A …
  6. physics

    A bicycle is turned upside down while its owner repairs a flat tire. A friend spins the other wheel, of radius 0.363 m, and observes that drops of water fly off tangentially. She measures the height reached by drops moving vertically …
  7. Physics

    A bicycle is turned upside down while its owner repairs a flat tire. A friend spins the other wheel and observes that drops of water fly off tangentially. She measures the heights reached by drops moving vertically. A drop that breaks …
  8. Physics

    A bicycle is turned upside down while its owner repairs a flat tire. A friend spins the other wheel and observes that drops of water fly off tangentially. She measures the heights reached by drops moving vertically (see figure below). …
  9. Physics

    Not sure where to go with this problem, any help is appreciated! A bike is turned upside down for repairs. The front wheel can be described as a hoop with radius R=0.6 m and mass M=1.0 kg and a small point mass m=0.005 kg attached …
  10. Physics

    Not sure where to go with this problem, any help is appreciated! A bike is turned upside down for repairs. The front wheel can be described as a hoop with radius R=0.6 m and mass M=1.0 kg and a small point mass m=0.005 kg attached …

More Similar Questions