Question

The weight of an object is more at the poles than at the equator. Is it beneficial to purchase goods at equator and sell them at the pole? Does it matter whether a spring balance is used or an equal-beam balance is used?

Answer 1

Answer:

Yes & It matters a lot whether a spring balance is used or equal weight is used .

Explanation:

Basically weight of any object inversely depends on the radius of earth at that point. The radius of earth is greater at equator than at poles so less is the gravitational force hence the weight. Calculations shows that the weight of an object is more at the poles than at the equator, by about 0.3%.

Thus the spring balance which measures the weight by the spring stiffness shows different reading than what the equal beam balance shows which depends on gravitational force.

Answer 2

Explanation:

• (a) Of course, it is beneficial to purchase goods at equator and sell them at pole as the weight of an object will be 0.3% more at the poles than that at the equator.
• So, we can get more goods at equator for the money we pay.
• (b)  Yes, because, an equal beam balance is used to measure mass of a body which remains same unchanged at both equator and poles, whereas, the spring balance is used to measure weight which changes from poles to equator with respect to earth’s gravitational force.