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Olympiad workbookNSEPGravitation

In an isolated asteroid of radius R and uniform density , a spherical cavity of diameter A C=R is excavated, where C is centre of asteroid. Choose correct alternative (s)

Options

  1. AA ball just dropped from A will strike C with speed v=2 R G 3
  2. BA ball dropped from A will reach C after time t= 3 G
  3. CAcceleration of ball dropped from A varies as its distance from O (centre of cavity)
  4. DWeight of a body placed at B (diametrically opposite to A ) on surface of asteroid decreases by a factor 7 8 d

Correct answer

B. A ball dropped from A will reach C after time t= 3 G

Step-by-step solution

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