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sci.physics-energy Calculator
Calculates kinetic energy (½mv²), gravitational potential energy (mgh), and elastic potential energy (½kx²) for a given system. Conservation of energy: in a frictionless system, total mechanical energy is constant — height converts to speed and back with no loss.
Inputs
Mass
Total mass (kg). Distinct from weight — weight = mass × gravity. Mass is constant; weight varies with location.
Velocity
Speed in a specified direction (m/s). Required for momentum, kinetic energy, and wave calculations.
Height
Vertical measurement. For health calculators, typically standing height without shoes.
Results
kinetic energy
Energy of motion: KE = ½mv². Scales with the SQUARE of velocity — doubling speed quadruples kinetic energy. This is why crash severity grows so rapidly with speed.
potential energy
Energy stored by position in a gravitational field: PE = mgh. Converts to kinetic energy as an object falls. At the top of a drop, energy is all potential; at the bottom, all kinetic (ignoring losses).
total mechanical
The combined total across all inputs and components.