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In: Physics

We usually assume that your weight as measured by a scale is equal to the magnitude...

We usually assume that your weight as measured by a scale is equal to the magnitude of the gravitational force that the earth exerts on you. Because of the rotation of the earth, however, the scale reading can actually be slightly different from your true weight. Which of the following accurately describes this effect?

Solutions

Expert Solution

A The scale reading is always greater than your true weight.

B The scale reading is always less than your true weight.

C The scale reading is only equal to your true weight if you are at the equator

.D The scale reading is only equal to your true weight if you are at the north or south pole.

Among these options B is the correct answer as If the earth were not spinning, then i would be heavier as i would feel the full force of gravity. So at that time only our scale measures the exact weight of mine because there no spinning or rotation of earth and when earth starts spinning then the effect of gravity reduces somehow which in turn not giving the true weight of mine on scale also there is more centrifugal force at the equator to cancel gravity, your overall weight at the equator versus at the poles is even less.

Also due to Eotvos effect which says that there is the change in gravitational force caused by the change in centrifugal acceleration resulting from the velocity of the earth when it is moving which differs the change in weight of the body in true scale.

genius_generous answered 2 years ago
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