question_answer 52)

  Identical packets are dropped from two aero planes, one above the equator and the other above the North Pole, both at height h. Assuming all conditions are identical, will those packets take same time to reach the surface of earth. Justify your answer.

Answer:

  No, those packets do not take same time to reach the surface of the earth. Because the value of g (i.e., acceleration due to gravity is) different at poles and equator due to rotation of the earth and is given by and at poles where as at equator . So, value of g at equator is less than value of g at poles and we know that. i.e.,Since, g is greatest at the poles than at the equator. So, packet dropped above the North Pole will reach first at the surface of the earth.