Questions
If the earth has no rotational motion, the weight of a person on the equator is W.
Determine the speed with which the earth would have to rotate about its axis so that the Person at the equator will weight is .
[Radius of earth =6400 km and g=10m / ]
detailed solution
Correct option is C
g1=g−ω2Rcos2θ ⇒2g3=g−ω2R ⇒ω2R=g−2g3=3g−2g3 ⇒ω2R=g3 ⇒ω=g3R ⇒ω=103×6400×103 ⇒ω=180×103=0.72×10−3rad/secTalk to our academic expert!
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The angular speed of earth, so that the object on equator may appear weightless, is , radius of earth 6400 km)
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