A body above the surface of the earth is pulled toward the center of the earth with a force proportional to the reciprocal of the square of the distance of the body from the center. If the radiusof the earth is 6375 km, find the velocity of the body as it strikes the surface of the earth if it falls from rest at a distance four times the earth’s radius measured from the center of the earth. What is the velocity if it falls from an infinite distance? Application of 1st order de. show step by step

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Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.