All Questions
7
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How can we use Newton's laws in an accelerating frame? [duplicate]
This question is bothering me for a while. As far as I know, newton's laws are valid for any inertial or non-accelerating frame. Then how can we apply newton's law on earth where we are constantly ...
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1
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2
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414
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Weight at the equator
At the equator, it is said that the weight of the object will be lesser than that at the poles. This is because of the circular motion at the earth. The explanation given is that the Earth’s ...
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2
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38
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Question about acceleration equations that can be used for a single object
Can the centripetal acceleration equation $a=\frac{v^2}r$ and the acceleration due to gravity equation $a=\frac{Gm}{r^2}$ be used interchangeably to find the acceleration of a single object?
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-3
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1
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Why do we use $F=GMm/r^2$ when calculating the centripetal force of the moon around the Earth and not $g=GM/r^2$? [closed]
When we calculate the centripetal force of a satellite orbiting earth, we use $g=GM/r^2$, implying that gravitational force and centripetal force are the same. However, when calculating the ...
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2
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Is it correct to say that different acceleration of free fall at the poles and equator is due to centripetal acceleration? [duplicate]
In one of the answers to this question I read that it was becsuse for an object experiencing circular motion at the equator, part of the gravitational force would have to provide for the centripetal ...
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3
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151
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About free fall
If a satellite orbits the earth is in free fall, it must have an acceleration because of gravity. Then why does the satellite's speed remain constant instead of increasing continuously?
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Change in speed of a satellite
Suppose there's some satellite orbiting the earth in circular motion. Suppose there's an asteroid that hits the satellite in the same direction as the instant velocity vector of the satellite. The ...
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