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Q.12. A gold merchant buys a little gold from Tandi bazaar by using

spring balance and sales it in Namche bazaar with the same cost

price. But he found his business in loss. Explain with reason.(extra

expenses in business is excluded)

Tandi bazaar is in low height from the sea level than Namche

bazaar. It means that radius of earth is longer in Namche bazaar and

shorter at Tandi bazaar.

Weight is inversely proportional to the square of radius of heavenly

1
body (i.e.. W∝ ) . When radius increases, weight decreases and vice
2
versa. As spring balance is used to measure weight, gold merchant

uses it to buy gold at Tandi. When merchant goes to Namche bazaar,

weight of gold is found to be decreased due to relation of weight and

radius of earth. He sells gold but found his business in loss even after

selling the gold at cost price. Hence, due to the variation in the radius

of earth at two different places, merchant bears loss in his business.