JEE Main 2021 — Gravitation Question with Solution
From: JEE Main 2021 (Online) 18th March Evening Shift
Question
If the angular velocity of earth's spin is increased such that the bodies at the equator start floating, the duration of the day would be approximately : [Take g = 10 ms2, the radius of earth, R = 6400 103 m, Take = 3.14]
Choose an option
Show full solutionCorrect option: A
Correct answer
A84 minutes
Step-by-step explanation
For objects to float
mg = 22R
= angular velocity of earth.
R = Radius of earth
..... (1)
Duration of day = T
..... (2)
= 83.775 minutes
84 minuites
mg = 22R
= angular velocity of earth.
R = Radius of earth
..... (1)
Duration of day = T
..... (2)
= 83.775 minutes
84 minuites
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