Question

The time period of rotation of the earth around its axis so that the at the objects at the equator become weightless is nearly $(g=9.8m/s^2)$,Radius of earth =6400 km.

• A. 64min
• B. 74 min
• C. 84min
• D. 94min

Answer 1

Answer: (C)

84min

Answer 2

$T = 2\pi \sqrt{\frac{R}{g}}$