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. A wire of resistance 4 ohm is stretched to twice its original length.
  2. In an unbiased p-n junction, holes diffuse from the p-region to n-region because of
  3. α- particles, β – particles and γ – rays are all having same energy.
  4. A stationary particle explodes into two particles of masses m₁ and m₂ which move
  5. Kepler’s third law states that square of period of revolution (T) of a planet