physics

posted by .

A trapeze artist sailing through the air rotates with a rotational speed of 0.9·rev/s.

If she contracts to reduce her rotational inertia to one sixth of what it was, what will her new rotational speed be? _____ rev/s?

Can she completely stop her rotation while still airborne? Choose one answer only.
1. yes, she must increase her rotational inertia
2. yes, she must decrease her rotational inertia
3. no, she cannot stop rotating
4. any of these are possible, depending on the skill of the artist

  • physics -

    yes

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    A heavy flywheel rotating on its central axis is slowing down because of friction on its bearings. At the end of the first minute of slowing, its rotational speed is 0.90 of its intial rotational speed of 250 rev/min. Assuming a constant …
  2. Physics

    A diver jumps off a dving board and does a twisting manuever. In the midst of his jump in the air, the diver cannot change his a. Rotational Energy b. Rotational Speed c. Rotational Inertia d. Angular momentum I say d just want to …
  3. PHYSICS

    If a trapeze artist rotates twice each second while sailing through the air, and contracts to reduce her rotational inertia to one-third, how many rotations per second will result?
  4. physics

    If a trapeze artist rotates once each second while sailing through the air and contracts to reduce her rotational inertia to one-third of what it was, how many rotations per second will result?
  5. physics

    A ballet student with her arms and a leg extended spins with an initial rotational speed of 0.90rev/s . As she draws her arms and leg in toward her body, her rotational inertia becomes 0.80 kg⋅m2 and her rotational velocity is …
  6. Maths, mechanics, stat

    A molecule has a rotational inertia 14000amupmsquare spining at an angular speed of 4. 30x10exponent12 radpersecond a) express the rotational inertia in kgmsq b)calculate rotational kinetic energy in EV.
  7. physics

    A circle is cut out of a uniform piece of plywood. How does the rotational inertia measured around a point on its outer edge compare with the rotational inertia about its central axis?
  8. ap physics

    A 10-kg disk-shaped flywheel of radius 9.0 cm rotates with a rotational speed of 320 rad/s. Determine the rotational momentum of the flywheel. With what magnitude rotational speed must a 10-kg solid sphere of 9.0 cm radius rotate to …
  9. physics

    A 10-kg disk-shaped flywheel of radius 9.0 cm rotates with a rotational speed of 320 rad/s. Determine the rotational momentum of the flywheel. With what magnitude rotational speed must a 10-kg solid sphere of 9.0 cm radius rotate to …
  10. physics

    A ballet student with her arms and a leg extended spins with an initial rotational speed of 1.2 rev/s . As she draws her arms and leg in toward her body, her rotational inertia becomes 0.80 kg⋅m2 and her rotational velocity is 3.9 …

More Similar Questions