Why gravitaional potenstial emergy si always negative?
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Hey mate!
Here's your answer!!
To do the opposite (ei, move a test mass from a point TO infinity) we need positive amounts of energy (like when we lift something up onto a shelf, or shoot a rocket out into space really far). But as we said what the gravitational potential energy wants to do is the opposite! So the work done by gravity is NEGATIVE. The gravitational potential energy is negative because us trying to do the opposite of what gravity wants needs positive energy.
Hope it helps you!
Here's your answer!!
To do the opposite (ei, move a test mass from a point TO infinity) we need positive amounts of energy (like when we lift something up onto a shelf, or shoot a rocket out into space really far). But as we said what the gravitational potential energy wants to do is the opposite! So the work done by gravity is NEGATIVE. The gravitational potential energy is negative because us trying to do the opposite of what gravity wants needs positive energy.
Hope it helps you!
Answered by
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To do the opposite (ei, move a test mass from a point TO infinity) we need positive amounts of energy (like when we lift something up onto a shelf, or shoot a rocket out into space really far). But as we said what the gravitational potential energy wants to do is the opposite! So the work done by gravity is NEGATIVE. The gravitational potential energy is negative because us trying to do the opposite of what gravity wants needs positive energy.
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