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Tower and Mine

Carry a scale up a tower and down a mine. Find where it reads a half or a ninth.

Physics · Class 11 · g above and below the ground · 10 simulations. For JEE, NEET and your boards.

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What you'll learn

  1. Twice as far: The field is the pull on each kg: g = GM/r²
  2. Up the space tower: Weight up high: W = W₀(R/(R + h))²
  3. A ninth of the weight: Find the height from the reading
  4. Clock on the tower: A pendulum up high: T ∝ 1/√g
  5. Half weight in the mine: g inside: g = g₀(1 − d/R)
  6. Hill and mine: Up is twice as steep as down
  7. Draw g(r): g(r): a straight line inside, 1/r² outside
  8. Draw the well: The potential well: deepest at the centre
  9. A heavy core: Density changes: find the mass inside, then g
  10. Spin till it floats: Spin lightens the equator: N = m(g − ω²R)