1.

 What should be the angular speed of earth, so that body lying on equator may appear weightlessness \[(g=10\,m/{{s}^{2}},\,\,R=6400\,km)\] [Pb. PET 2000]

A. \[\frac{1}{800}rad/s\]
B.   \[\frac{1}{400}rad/s\]
C. \[\frac{1}{600}rad/s\]
D.   \[\frac{1}{100}rad/s\]
Answer» B.   \[\frac{1}{400}rad/s\]


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