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The force that the earth exerts on the moon is identical to the force that the moon exerts on the earth. It can be calculated using the simple formula of Newtonian gravitation:
F = G M1M2/R2
F = the force between the two objects
M1 and M2 are the masses of the two objects
R = the distance between the centers of the two objects
G = the constant used to derive a numerical value from the proportionalities
Mass of the earth = 5.97 x 1024 kg
Mass of the moon = 7.3 x 1022 kg
Distance between earth and moon = 3.844 x 108 m
G = 6.27 x 10-11
Now we have all the numbers we need to calculate the force:
F = (6.27 x 10-11) (5.97 x 1024) (7.3 x 1022) / (3.844 x 108)2
= (6.27 x 5.97 x 7.3) (10-11+24+22) / (14.776 x 1016)
= (273.253 x 1035) / (14.776 x 1016)
= 1.84925 x 1020 Newtons = 4.1686 x 1019 pounds = 20,843,000,000,000,000 tons.
Wiki User
∙ 14y ago
Wiki User
∙ 11y agoNewton's third law states that when a body exerts a force on another body then the second body also exerts an equally large force on the first, but in the opposite direction.
In the case of the Earth and the Moon, the Earth exerts a gravitational force on the Moon of magnitude F=GMm/r2, where M is the mass of the Earth, m is the mass of the Moon, r is the distance from the Moon to the Earth and G is a constant. This force acts from the Moon towards the Earth. Likewise the Moon exerts a gravitational force on the Earth of magnitude F=GMm/r2, which is exactly the same, but this one acts from the Earth towards the Moon.
So here we have two forces of equal magnitude, similar nature (both of gravitational origin) and opposite direction. Hence the reaction force of the Moon on the Earth is the force of the Earth on the Moon.
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The moon orbits earth and not the sun because the sun doesn't exert a gravitional force on the moon True or False?
False. The sun does exert a gravitational force on the moon.
What force do the sun and the moon exert on the earth?
They exert Gravitational Force on each other. It is a force which is directly proportional to Mass of the object
Do The Earth and Moon both exert a gravitational force on each other?
Yes
Why is weight of objects different on the moon than on the earth?
Gravity on the moon is one-sixth of that on Earth, so you will exert less force on the moon.
Why is the weight of an object different on earth than on the moon?
Gravity on the moon is one-sixth of that on Earth, so you will exert less force on the moon.
Does Earth exert a contact or a non-contact force on the moon?
Earth exerts a non-contact force on the moon.
True or false The Moon orbits Earth and not the Sun because the Sun doesn't exert a gravitational force on the Moon?
False. The sun does exert a gravitational force on the moon.
The moon orbits earth and not the sun because the sun doesn't exert a gravitional force on the moon True or False?
False. The sun does exert a gravitational force on the moon.
What force do the sun and the moon exert on the earth?
They exert Gravitational Force on each other. It is a force which is directly proportional to Mass of the object
Does the earth and the moon exert a gravitational force on each other?
no they don't
Do The Earth and Moon both exert a gravitational force on each other?
Yes
Why is the weight of an object different on earth than on the moon?
Gravity on the moon is one-sixth of that on Earth, so you will exert less force on the moon.
Why is weight of objects different on the moon than on the earth?
Gravity on the moon is one-sixth of that on Earth, so you will exert less force on the moon.
Does the moon orbits earth and not the sun because the sun doesn't exert a gravitational force on the moon?
false
Do the earth exert a force on the moon?
Yes, force of gravity. That is why it orbits the earth rather than flying off in a straight line.
Why does the moon exert a lower gravitational force than the earth?
The moon is smaller than the Earth.Therefore it has a lower gravitational force. Don't you know this?
What force keeps the moon in orbit around the sun?
The force of gravity that they exert on each other, and the velocities of the Moon and Earth which is their "inertia".
