The moon orbits the Earth in a circle of radius 400000km. Considering only these two objects, state what force

Question

or forces act on the Moon and explain how Newton's third law of motion applies to the system.

I need to know if the Earth causes the centripetal acceleration too these things, we know the gravitational forces already etc

Answer 1

The only force acting on moon is the gravitational force of attraction by the earth. This force provides the necessary centripetal force required for the moon to move on a circular path.

According to Newton's third law, equal and opposite force is exerted by the moon on the earth.

You are welcome to refer to a chapter on 'Gravitation' from my free educational website www.schoolnotes4u.com and download study notes of physics/mathematics from it without any registration.

Answer 2

The Field of the Space Substance, (Being the the cause of gravity) ,acts like a spring between the Earth and the Moon.
That means that the earth and the moon share a comnon spring force.The pressure of gravity on the moons and on the Earth tends to push them together resulting a spring force in between which is called Gravitational force. This force causes a phenomenon between the two masses called tidal forces. The forces are always equal in magnetude and opposite in direction in accordance to Newton's 3rd law of motion.
Einstein Expressed this spring compression of Space as a curvature of space in his Field Equation of General Relativity.

Answer 3

the only force that acts in this situation is gravity and the effect of newtons tehird law is that the reaction force of the moon to the gravitation al pull of the earth cuseses a tensile effect. In this manner the moon is like a ball on a string and the earth is your hand doing the spining by creating tension.

Answer 4

the force on the moon by the earth can b found by the law of
gravitation e.e
F = ( Me Mm)/r2

the newton's 3rd law is applied cos we see that earth
attracts the moon and a reaction force by the moon on the earth as a result the moon rotattes around the earth with constant veloicity which shows the net force is zero.

Answer 5

It's also not so much that the Earth causes it, but the combined mass of the Earth and the moon causes it, in the form of gravitation toward one another.