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Is gravity 9.8 ms

Updated: 8/10/2023
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15y ago

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According to Newton's law of Universal Gravitation, all masses have a force of attraction between itself and another mass. This force is proportional to the object's masses and inversely proportional to the radius between the objects squared. The formula F=GMm/r^2 can be used to calculate the Earth's gravitational field.

F=mGM/r^2

but the force we are trying to find is the gravitational force.

as F=ma (newton's second law), a=GM/r^2.

Since G is 6.67x10^-11, M = 5.98x10^24 and r = 6367000m, we can find out 'a' which is the acceleration an object will experience on the surface of Earth due to the Earth's gravitational field. It will equal to approximately 9.8 metres per second squared.

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13y ago
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10y ago

Well it vary with distance from center of the earth. If you take measurement of gravity very high above the ground it may be less than 9.8 and if you measure it below the earth surface then it may be more. Average pull of gravity at surface is 9.8ms-2

-Thunder

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12y ago

9.8 m/s2 is the 'acceleration' due to gravity, on or near the surface of the earth.

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15y ago

Earth's surface gravity is 9.8 m s-2.

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14y ago

True.

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