Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Rotational Motion question

2019 · 8 Apr · Shift 1 · Q62
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Physics
  4. /Rotational Motion
  5. /2019 · 8 Apr · Shift 1 · Q62

Rotational Motion question

2019 · 8 Apr · Shift 1 · Q62

JEE MainPhysicsRotational MotionMCQ+4 / −1
A thin circular plate of mass M and radius R has its density varying as ρ\rhoρ(r) = ρ\rhoρ 0r with ρ\rhoρ 0 as constant and r is the distance from its centre. The moment of Inertia of the circular plate about an axis perpendicular to the plate and passing through its edge is I = aMR2. The value of the coefficient a is :
  1. A
    12{1 \over 2}21​
  2. B
    32{3 \over 2}23​
  3. C
    85{8 \over 5}58​
  4. D
    35{3 \over 5}53​
PreviousNext

More from Rotational Motion

  • An electric dipole is formed by two equal and opposite charges q with separation d. The charges have same mass m. It is kept in a uniform electric field E. If it is slightly rotated from its equilibrium orientation, then its angular…2019 · MCQ
  • A rectangular solid box of length 0.3 m is held horizontally, with one of its sides on the edge of a platform of height 5m. When released, it slips off the table in a very short time t = 0.01s, remaining essentially horizontal. The angle… Includes diagram2019 · MCQ
  • A solid sphere and solid cylinder of identical radii approach an incline with the same linear velocity (see figure). Both roll without slipping all throughout. The two climb maximum heights hsph and hcyl on the incline. The ratio hsph/hcyl… Includes diagram2019 · MCQ
  • A stationary horizontal disc is free to rotate about its axis. When a torque is applied on it, its kinetic energy as a function of θ, where θ is the angle by which it has rotated, is given as k θ 2. If its moment of…2019 · MCQ
  • The following bodies are made to roll up (without slipping) the same inclined plane from a horizontal plane. : (i) a ring of radius R, (ii) a solid cylinder of radius R/2 and (iii) a solid sphere of radius R/4 . If in each case, the speed…2019 · MCQ
  • A thin smooth rod of length L and mass M is rotating freely with angular speed ω 0 about an axis perpendicular to the rod and passing through its center. Two beads of mass m and negligible size are at the center of the rod…2019 · MCQ
  • Moment of inertia of a body about a given axis is 1.5 kg m2. Initially the body is at rest. In order to produce a rotational kinetic energy of 1200 J, the angular accleration of 20 rad/s2 must be applied about the axis for a duration of :-2019 · MCQ
  • If the angular momentum of a planet of mass m, moving around the Sun in a circular orbit is L, about the center of the Sun, its areal velocity is :2019 · MCQ