Navigate

A small part of the rim of a fly wheel breaks off while it is rotating at a constant

A small part of the rim of a fly wheel breaks off while it is rotating at a constant angular speed. Then its radius of gyration will

Options

(a) Increase
(b) Decrease
(c) Remain unchanged
(d) Nothing definite can be said

Correct Answer:

Decrease

Explanation:

Iω is conserved. If a small piece is broken. I will be less and ω will increase But I = mk², as I is less, m is small, k² also will be small. The radius of gyration also will decrease.

DCE2006
admin:

View Comments (1)

  • Due to decrease in the mass of the flywheel M.I. decreases. To conserve angular momentum angular velocity of flywheel increases.

Leave a Comment

Related Questions

  1. The energy of groundstate (n=1) of hydrogen level is -13.6 eV. The ionistation
  2. A car sounding a horn of frequency 100 Hz passes an observer. The ratio
  3. From a disc of radius R, a concentric circular portion of radius r is cut-out so
  4. A student performs an experiment to determine the Young’s modulus of a wire
  5. A charged particle experiences magnetic force in the presence of magnetic field.