Question

what is the importance of Inverse Square Law ( universal law of gravitation)​

Answer 1

Radiation protection is an important concept in radiology when ionizing radiations are emitted from the radioactive sources. The inverse square law explains how the dose gets reduced by increasing the distance. It can also be said that dose is inversely proportional to square of radius.

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Answer 2

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The most important part about this is not only that objects pull on each other, but that two objects attract each other with a force that is proportional to the product of their masses and inversely proportional to the square of the distance between them. This is known as Newton's law of universal gravitation.