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3
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Why is gravity considered a negative vector in a pendulum question?
In many places and tutorials, gravity is often considered as a negative vector.
I am confused as to why is that? I though I was missing something from trigonometry but it was just negative in first ...
- 171
1
vote
5
answers
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Why $g$ is not negative in potential energy $= mgh$ formula?
For eg. A boy of mass 55 kg runs up a staircase of 50 steps in 10s. If the height of each step is 10 cm, find his power.
My question is here why are we not taking g as negative as boy is moving up ...
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-1
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2
answers
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Gravitational Acceleration $g$ [duplicate]
How to determine sign of $g$? It is said that we take it negative if any body is in upward motion. So why we don't take it positive when we observe downward motion.It is very confusing.
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