How does g vary with distance? What are the values displayed by shopkeeper?

Sudha buys a few grams of precious stones from a shop in Delhi. She takes them to equator and is surprised to see that their weight is reduced. She thinks that she has been cheated. She goes back to the seller and claims the exchange amount. The shopkeeper explains her how weight differs due to value ofg. Satisfied, Shudha goes back.
Read the above passage and answer the following questions.

  1. How does g vary with distance?
  2. What are the values displayed by shopkeeper?
  1. g 1/R2, at equators R is maximum hence g is minimum.
  2. Shopkeeper is logical, patient and scientific.