JEE Main 2018 — Gravitation Question with Solution
From: JEE Main 2018 (Online) 16th April Morning Slot
Question
Suppose that the angular velocity of rotation of earth is increased. Then, as a consequence :
Choose an option
Show full solutionCorrect option: D
Correct answer
DExcept at poles, weight of the object on the earth will decrease.
Step-by-step explanation
With rotation of earth the effect on acceleration due to gravity vary as
g' = g 2 R cos2
Here is lattitude.
At poles = 90o so those will be no change in gravity.
At all other point will increase so g' will decrease.
g' = g 2 R cos2
Here is lattitude.
At poles = 90o so those will be no change in gravity.
At all other point will increase so g' will decrease.
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This is a previous-year question from JEE Main 2018, covering the Gravitation chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.