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How strong is the force of gravity on earth?

Answer 1

The force of gravity is also known as weight, which changes for different objects. The gravitational field strength, or acceleration of gravity, is approximately the same everywhere on Earth's surface.

Any two masses can be attracted to one another by gravity, which is a force of attraction that increases with mass and decreases with distance squared (i.e., doubling a distance equals four times less gravity).

"How strong is the force of gravity?" is not quite accurate, since the force of gravity on an object depends on its mass. When you pick up an object, the weight you feel is the force of gravity between the Earth and that object. A heavier object is heavier because it has a larger mass, and therefore feels a greater force of gravity.

However, the gravitational field strength is fairly constant* across the surface of the Earth. This field strength determines how much force of gravity gravity (weight) any object will have. This field strength is 9.8 Newtons per kilogram of mass #(9.8N/(kg))#. What this means is a 1 kg mass will feel a downward force of 9.8 N. A 2 kg mass will feel 19.6N, a 500g mass will feel 4.9N, and so on. 9.8 N is approximately 2.203 lb.

*At the poles, the field strength is #9.83N/ (kg)#, and at the equator it is #9.78 N/(kg)#. A global average is #9.80665N/(kg)#, but that is a degree of precision that we cannot achieve, so #9.8 N/(kg)# is probably a better choice.

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Answer 2

Clara Avalos

The force of gravity on Earth is approximately 9.8 meters per second squared (m/s²).

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.