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Results tagged with energy
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user 152979
Energy is the conserved quantity associated to time-translation invariance and represents the work a system is capable of doing. Use this tag for questions about energy, and consider adding the [energy-conservation] tag if it is specifically about its conservation.
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why dont we use the parallel component of gravity when calculating the work done by a pendulum?
Work is given by force multiplied by displacement, for a pendulum
only the parallel component of gravity is causing a displacement so why don't we use that ?
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How can a battery offer resistance and act as a voltage provider?
Let's assume that a positive charge passes from the negative pole to the positive pole , hence it will gain potential energy since the electrochemical reactions in the battery does work on the charge. …
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Why is the work done by the parallel component of gravity equal to $mgh$?
I understand the mathematics behind why they are equal but I don't understand it in terms of intuition , for example when moving a cart along an incline plane the work done by the parallel component o …
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Why is kinetic energy not conserved during an inelastic collison?
If $\vec{F}_{net} \cdot \mathrm{d}\vec{x}$ is equal to the change in kinetic energy, therefore both objects will experience the same net force (referring to the fact that this is an isolated system) for … the same distance, now with this in mind how is it possible for an inelastic collision to occur if one object gains the same amount of kinetic energy as the other loses that exact same amount? …
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