physics

posted by .

During a throw an athlete exerts a net average torque of 100 Nm on a discus
about its axis of spin. The mass of the discus is 2 kg and its radius of gyration
about its spin axis is 12 cm. If the discus was not spinning at the beginning of
the throw and the throwing action lasts for 0.2 s, calculate how fast (in
radians s-1) the discus is spinning when it is released. [8 marks]

  • biomechanics -

    694.44rad/s

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    The world record for the discus throw is 74.08m , set by Jürgen Schult in 1986.If he had been competing, not on earth, but on Mars, where the acceleration due to gravity is 0.379 what it is on earth, and if he had thrown the discus …
  2. physics

    The world record for the discus throw is 74.08m , set by Jürgen Schult in 1986.If he had been competing, not on earth, but on Mars, where the acceleration due to gravity is 0.379 what it is on earth, and if he had thrown the discus …
  3. Physics

    If a discus thrower rotates through the last 45 degrees of a turn in .11 seconds and the distance from the axis of the rotation to the center of the discus is 1.22 m, what is the average linear velocity of the discus?
  4. physics

    If a discus thrower rotates through the last 45 degrees of a turn in .11s and the distance from the axis of rotation to the center of the discus is 1.22m, calculate the average linear velocity of the discus.
  5. Physics- Mechanics

    Before throwing a 0.821 kg discus, an athlete rotates it along a circular path of radius 1.19 m. The maximum speed of the discus is 18.7 m/s. Determine the magnitude of its maximum radial acceleration. Answer in units of m/s2.
  6. Physics

    The athlete shown in the figure rotates a 1.00 kg discus along a circular path of radius 1.07 m. The maximum speed of the discus is 19.0 m/s. Determine the magnitude of the maximum radial acceleration of the discus.
  7. physics

    An athlete spins in a circle before releasing a discus with a tangential speed of 9.0 m/s. If his angular speed at the moment of release was 12.0 rad/s, how far was the discus from his axis of rotation?
  8. Physics

    A wheel of moment of inertia 0.136 kg · m2 is spinning with an angular speed of 5000 rad/s. A torque is applied about an axis perpendicular to the spin axis. If the applied torque has a magnitude of 67.8 N · m, the angular velocity …
  9. Physics

    A uniform disk with mass m = 8.54 kg and radius R = 1.35 m lies in the x-y plane and centered at the origin. Three forces act in the +y-direction on the disk: 1) a force 333 N at the edge of the disk on the +x-axis, 2) a force 333 …
  10. physics

    if the radius from the discus to the axis of rotation is 1.4m, what is the linear velocity of the discus at the time of release?

More Similar Questions