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  2. Gravitational energy - Wikipedia

    en.wikipedia.org/wiki/Gravitational_energy

    The gravitational potential energy is the potential energy an object has because it is within a gravitational field. The magnitude & direction of gravitational force experienced by a point mass m {\displaystyle m} , due to the presence of another point mass M {\displaystyle M} at a distance r {\displaystyle r} , is given by Newton's law of ...

  3. Kinetic energy - Wikipedia

    en.wikipedia.org/wiki/Kinetic_energy

    A system of bodies may have internal kinetic energy due to the relative motion of the bodies in the system. For example, in the Solar System the planets and planetoids are orbiting the Sun. In a tank of gas, the molecules are moving in all directions. The kinetic energy of the system is the sum of the kinetic energies of the bodies it contains.

  4. Zero-point energy - Wikipedia

    en.wikipedia.org/wiki/Zero-point_energy

    This equation explained the new, non-classical fact that an electron confined to be close to a nucleus would necessarily have a large kinetic energy so that the minimum total energy (kinetic plus potential) actually occurs at some positive separation rather than at zero separation; in other words, zero-point energy is essential for atomic ...

  5. Galileo's Leaning Tower of Pisa experiment - Wikipedia

    en.wikipedia.org/wiki/Galileo's_Leaning_Tower_of...

    Comparison of the antiquated view and the outcome of the experiment (size of the spheres represent their masses, not their volumes) Between 1589 and 1592, [1] the Italian scientist Galileo Galilei (then professor of mathematics at the University of Pisa) is said to have dropped "unequal weights of the same material" from the Leaning Tower of Pisa to demonstrate that their time of descent was ...

  6. Oberth effect - Wikipedia

    en.wikipedia.org/wiki/Oberth_effect

    at 10 m/s, the rocket starts with 10 2 = 100 J of kinetic energy. Adding 1 m/s increases the kinetic energy to 11 2 = 121 J, for a gain of 21 J. This greater change in kinetic energy can then carry the rocket higher in the gravity well than if the propellant were burned at a lower speed.

  7. Experimental testing of time dilation - Wikipedia

    en.wikipedia.org/wiki/Experimental_testing_of...

    A much more precise experiment of this kind was conducted by David H. Frisch and Smith (1962) and documented by a film. [8] They measured approximately 563 muons per hour in six runs on Mount Washington at 1917m above sea-level. By measuring their kinetic energy, mean muon velocities between 0.995 c and 0.9954 c were determined.

  8. König's theorem (kinetics) - Wikipedia

    en.wikipedia.org/wiki/König's_theorem_(kinetics)

    The second part expresses the kinetic energy of a system of particles in terms of the velocities of the individual particles and the centre of mass.. Specifically, it states that the kinetic energy of a system of particles is the sum of the kinetic energy associated to the movement of the center of mass and the kinetic energy associated to the movement of the particles relative to the center ...

  9. Delft tower experiment - Wikipedia

    en.wikipedia.org/wiki/Delft_tower_experiment

    Nieuwe Kerk in Delft. In 1586, scientists Simon Stevin and Jan Cornets de Groot conducted an early scientific experiment on the effects of gravity. The experiment, which established that objects of identical size and different mass fall at the same speed, was conducted by dropping lead balls from the Nieuwe Kerk in the Dutch city of Delft.