posted by henry .
The distinction between mass and weight was discovered after Jean Richer transported pendulum clocks from Paris to French Guiana in 1671. He found that they ran slower there quite systematically. The effect was reversed when the clocks returned to Paris. Suppose you weigh 199 pounds in Paris. How much weight would you personally lose in traveling from Paris, where g = 9.8095 m/s2, to Cayenne, where g = 9.7808 m/s2
You would lose weight in proportion to the decrease in g. Mass stays the same but weight is proportional to g.
Multiply the original weight by (9.8095-9.7808)/9.8095. That will be the weight loss.