Ali wants to test the hypothesis that the weight of an object varies depending on its location. For this purpose, he measures the weight of a book (m = 10 kg) at the North Pole and the Equator. Assuming the Earth to be spherical, will the scale readings be the same or different?

• A. 0.34 N greater at the North Pole
• B. 0.34 N greater at the Equator
• C. No difference in scale reading
• D. 0.51 N greater at the North Pole
• E. 0.51 N greater at the Equator

Answer: (A)