Question 1 Calculate the value of g at the north pole, given g at the equator is 9.78 m/sec². Consider that the Equatorial radius = 6,378.1370 km while the Polar radius= 6,356.7523 Question 2 Calculate how much gravity changes, and whether it is an increase or a decrease, on going one km north from latitude: (a) equator, (b) 45°N, (c) 45° S. What elevation changes in air would give the same changes of g? Question 3 A spherical cavity of radius 8 m has its center 15 m below the surface. If the cavity is full of water and is in rocks of density 2.4 Mg/m³, what is the maximum size of its anomaly?

Question 1 Calculate the value of g at the north pole, given g at the equator is 9.78 m/sec². Consider that the Equatorial radius = 6,378.1370 km while the Polar radius= 6,356.7523 Question 2 Calculate how much gravity changes, and whether it is an increase or a decrease, on going one km north from latitude: (a) equator, (b) 45°N, (c) 45° S. What elevation changes in air would give the same changes of g? Question 3 A spherical cavity of radius 8 m has its center 15 m below the surface. If the cavity is full of water and is in rocks of density 2.4 Mg/m³, what is the maximum size of its anomaly?