Horizontal and Vertical Components of Projectile Motion
Assertion :If...
Question
Assertion :If the earth suddenly stops rotating about its axis, the n acceleration due to gravity will become the same at all places. Reason: The value of acceleration due to gravity is independent of rotation of the earth.
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Assertion is incorrect but Reason is correct
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Solution
The correct option is C Assertion is correct but Reason is incorrect The acceleration of gravity is due to gravitational force earth exerts on objects, but due to rotation of earth, different centrifugal forces act on objects at different latitudes, and hence acceleration due to gravity is different at different places. However if the earth stops rotating, the centrifugal force vanish and only the gravitational force acts and acceleration due to gravity becomes same at all places.