In this question, a statement of assertion 
is followed by a statement of reason (R). Mark the correct choice as:
Assertion: Space rockets are usually launched in the equatorial line from west to east.
Reason: The acceleration due to gravity is minimum at the equator.
Text Solution
Verified by ExpertsB
We know that earth revolves from west to east about its polar axis. Therefore, all the particles
on the earth have velocity from west to east. This velocity is maximum in the equatorial line, as 
, where 
is the radius of earth and 
is the angular velocity of revolution of earth about its polar axis. When a rocket is launched from west
to east in equatorial plane, the maximum linear velocity is added to the launching velocity of the rocket, due to which launching becomes easier.
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