Consider two iron spheres, each of diameter 195 mm, which are just touching. At what distance r from the center of the earth will the force of mutual attraction between the contacting spheres be equal to the force exerted by the earth on one of the spheres? Answer:r = (107)km

Consider two iron spheres, each of diameter 195 mm, which are just touching. At what distance r from the center of the earth will the force of mutual attraction between the contacting spheres be equal to the force exerted by the earth on one of the spheres? Answer:r = (107)km

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter5: More Applications Of Newton’s Laws

Section: Chapter Questions

Problem 37P

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British Gravitational Bg System Of Units

Measuring is the comparison of a particular physical quantity with its reference value. A unit is a fixed physical quantity. The length is a physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with. 

Question

Consider two iron spheres, each of diameter 195
mm, which are just touching. At what distance r
from the center of the earth will the force of
mutual attraction between the contacting spheres
be equal to the force exerted by the earth on one
of the spheres?
Answer: r =
(107)km

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