Suppose the moon were held in its orbit not by gravity but by a massless cable attached to the center of the earth. part awhat would be the tension in the cable? use the table of astronomical data inside the back cover of the textbook. express your answer to three significant figures and include the appropriate units.

Explanation:

The tension in the cable would be exactly equal to the force of gravity between Moon and Earth, which is given by:

where

is the gravitational constant

is the mass of the Moon

is the mass of the Earth

is the distance between Moon and Earth

Substituting numbers into the equation, we find

if you already have the answer to (a), then just work out how many periods there are in 1 minute, and that's the answer to (c).

c.the charges if the proton and electron and gravity