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Why does the mechanical (total) energy of the skater not change over time?
Wiki User
∙ 9y ago
It certainly does; mechanical energy will be wasted due to friction. Otherwise, if you disregard friction, the fact that the total mechanical energy is conserved follows from conservation of energy.
Wiki User
∙ 9y ago
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What is true about the total mechanical energy of a pendulum in the absence of friction?
In that case, the total mechanical energy won't change.
What force is path-dependent and will change an object's total mechanical energy?
nonconservative
Force is path-dependent and will change an object's total mechanical energy?
nonconservative force
Explaine the law of conservation of mechanical energy?
This simply means that, as long as no mechanical energy is wasted or converted to other types of energy (and no other type of energy to mechanical energy), the total amount of mechanical energy doesn't change. Mechanical energy refers to the sum of kinetic and potential energy. Since energy losses and energy conversions do occur, this is not really a "law". In other words, the law of conservation of energy has not been known to be violated; conservation of mechanical energy is very easily violated.
Why doesn't the total mechanical energy in an isolated system change?
The total energy of an isolated system will not change if it has no interaction with the outside.The reason for this is that energy is conserved.(To be exact about it, one needs to be a little picky about what it means means to be isolated. That means no radiation of light and no gravitational interactions and no electromagnetic forces, but that is pretty much understood when one says "isolated.")Mechanical energy does not generally include things like heat, electromagnetic energy and chemical energy, to name a few.Assuming mechanical energy is entirely kinetic and potential energy, then energy is conserved in an isolated system only if the exchange of energy is between mechanical and potential. Expand the definition of "mechanical energy" and you can exchange between any forms of energy in your definiion.That is the only condition that the conservation of mechanical energy is achieved.
What is true about the total mechanical energy of a pendulum in the absence of friction?
In that case, the total mechanical energy won't change.
What force is path-dependent and will change an object's total mechanical energy?
nonconservative
Force is path-dependent and will change an object's total mechanical energy?
nonconservative force
Potential energy plus kinetic energy equal what?
Mechanical energy is equal to potential energy plus kinetic energy in a closed system. The total mechanical energy is conserved.
Explaine the law of conservation of mechanical energy?
This simply means that, as long as no mechanical energy is wasted or converted to other types of energy (and no other type of energy to mechanical energy), the total amount of mechanical energy doesn't change. Mechanical energy refers to the sum of kinetic and potential energy. Since energy losses and energy conversions do occur, this is not really a "law". In other words, the law of conservation of energy has not been known to be violated; conservation of mechanical energy is very easily violated.
Why doesn't the total mechanical energy in an isolated system change?
The total energy of an isolated system will not change if it has no interaction with the outside.The reason for this is that energy is conserved.(To be exact about it, one needs to be a little picky about what it means means to be isolated. That means no radiation of light and no gravitational interactions and no electromagnetic forces, but that is pretty much understood when one says "isolated.")Mechanical energy does not generally include things like heat, electromagnetic energy and chemical energy, to name a few.Assuming mechanical energy is entirely kinetic and potential energy, then energy is conserved in an isolated system only if the exchange of energy is between mechanical and potential. Expand the definition of "mechanical energy" and you can exchange between any forms of energy in your definiion.That is the only condition that the conservation of mechanical energy is achieved.
What is the total amount of kinetic energy and potential energy in a system?
Internal energy at the microscopic level and thermodynamic or mechanical energy at the macroscopic level.
Mechanical energy is the total of the potential energy and the kinetic energy?
Yes
What is total mechanical energy?
The some of potential energy + kinetic energy.
What energy is the total kinetic and potential energy in a system?
Mechanical energy
What is the the total energy of motion and position of an object?
Mechanical Energy
What are the two kinds of michanical energy?
These are kinetic and potential energy. Total mechanical energy is sum of these two: E = T + U E = total mechanical energy T = kinetic energy U = potential energy
