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Spin Test

Hang a test weight on a spinning body. Set its moment of inertia and time the spin-up.

Physics · Class 11 · Moment of inertia · 8 simulations. For JEE, NEET and your boards.

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What you'll learn

  1. Two beads: Point masses: I = Σmr²
  2. Plain disc: Standard shapes about their centre
  3. Twice as wide: Scale a disc: I grows as R⁴
  4. Same spin-up: Radius of gyration: k = √(I/M)
  5. Square of beads: Beads at corners: find each r first
  6. Bend the wire: Bend a wire: find R, then I = MR²
  7. Heavy core: A ball denser at its centre: add up shells
  8. Spin and circle: Spin plus moving: KE = ½Icmω² + ½Mv²