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BITSAT 2009
Exam
BITSAT
Year
2009
Subject
Physics
Chapter
Gravitation

BITSAT 2009 · Physics · Gravitation

The rotation of the earth having radius R about its axis speeds...

The rotation of the earth having radius R\mathrm{R} about its axis speeds upto a value such that a man at latitude angle 60∘60^{{}^{\circ}} feels weightless. The duration of the day in such case will be:

Options

  1. A8πRg8 \pi \sqrt{\frac{\mathrm{R}}{\mathrm{g}}}
  2. B8πgR8 \pi \sqrt{\frac{g}{R}}
  3. CπRg\pi \sqrt{\frac{\mathrm{R}}{\mathrm{g}}}
  4. D4πgR4 \pi \sqrt{\frac{\mathrm{g}}{\mathrm{R}}}

Correct answer

C. πRg\pi \sqrt{\frac{\mathrm{R}}{\mathrm{g}}}

Step-by-step solution

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