The radius of gyration of a solid sphere of radius r about a certain axis is r

The radius of gyration of a solid sphere of radius r about a certain axis is r. The distance of this axis from the centre of the sphere is

Options

(a) r
(b) 0.5r
(c) √(0.6)r
(d) √(0.4)r

Correct Answer:

√(0.6)r

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

admin:

View Comments (1)

  • Using parallel axis theorem ,
    I =Icm(about the centre of mass) + M(mass of the sphere)h2. where h is the required distance of the axis from centre of sphere
    MK2 = 2/5 MR2. + Mh2
    K2= 2R2/5 + h2
    R2 = 2R2/5. + h2. (given that. K=R. )
    3R2/5 = h2
    Which gives h=√3/5R2
    h=√0.6. R. (Answer)

Related Questions

  1. A sphere of 4cm radius is suspended with in a hollow sphere of 6cm radius. If the inner
  2. An alternating voltage given as, V=100√2 sin100t V is applied to a capacitor
  3. Huygen’s wave theory allows us to know
  4. Two coils of self inductance 2 mH and 8 mH are placed so close together
  5. The rate of increase of thermo-e.m.f. with temperature at the neutral temperature