The acceleration due to gravity at the e...

The acceleration due to gravity at the equator becomes zero, if

the speed of rotation of earth decreases to 1/17th of its present value

the time period of rotation of earth decreases to 1/17th of its present value

the speed of revolution of earth around the sun increases 17 times

the angular velocity of rotation of earth becomes zero

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The angular speed of earth's rotation about its own axis is omega . When its angular speed is increased to n time its original angular speed, the acceleration due to gravity at the equator becomes zero. What is the value of n? [R is the equatorial radius of the earth]

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The imaginary angular velocity of the earth for which the effective acceleration due to gravity at the equator shall be zero is equal to [Take g = 10 m//s^(2) for the acceleration due to gravity if the earth were at rest and radius of earth equal to 6400 km.]

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NIKITA PUBLICATION-GRAVITATION-Multiple Choice Questions

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