1.State in words and in an equation the Universal Law of Gravity. 2.Gravity is o

Question

1.State in words and in an equation the Universal Law of Gravity.  

2.Gravity is one of the four fundamental forces of nature. What are the other three?

3.In the field of astronomy, gravity is the single most important force responsible for things like why celestial bodies are spherically shaped and why planets orbit the sun in elliptical orbits. List three other astronomical phenomena that depend on gravity.

4.Using the equation you gave in #1 calculate the force of gravity between:

a. Earth and the moon

b. Earth and the sun

c. Whis is stronger?

Please show work.

Explanation / Answer

1 )

Force betwee two particles is directly proportional to their masses and inversely proportional to the square of distance between them

F = Gm1m2 /r^2

b)

other three are

strong forces

weak forces

Electromagnetic

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