HOME DICTIONARY OF PHYSICS NOBEL PRIZE PHYSICS HIGH SCHOOL PHYSICS B C NATURAL HIGH SCHOOL PHYSICS

HOME DICTIONARY OF PHYSICS NOBEL PRIZE PHYSICS HIGH SCHOOL PHYSICS B C NATURAL HIGH SCHOOL PHYSICS A HIGH SCHOOL amanda sheppard PHYSICS B SCHOOL EDUCATION GENERAL DIRECTION SCHOOL PHYSICS B C NATURAL HIGH SCHOOL PHYSICAL EDUCATION GENERAL DIRECTION C SCHOOL CLASSES AND AREAS OF PHYSICAL MECHANICAL WAVE ASTRONOMY METEOROLOGY VISUAL ACOUSTICS ELECTROMAGNETISM amanda sheppard THERMODYNAMICS Atomic amanda sheppard Physics NUCLEAR PHYSICS QUANTUM PHYSICS MODERN PHYSICS AND BIOGRAPHIES BIOGRAPHY BIOGRAPHY AND FOREIGN WORK PROJECT ANCIENT GREEK HISTORY OF NATURAL SCIENCES OF NATURAL HISTORY MYTHOLOGY OF PHYSICAL CONTACT
MECHANICAL TALANTOSEIS DEFINITION OF OSCILLATION FTHINOUSAS During the study the harmonic oscillator assumption that the amplitude of oscillation remains stathero.Stin reality no system that oscillates freely, having received an initial stimulation, does not maintain amanda sheppard constant amplitude, because

the energy of friction then decreases, resulting in the amplitude of oscillation to decrease and eventually zeroed. Oscillations of this kind are called decreasing amanda sheppard oscillations or damped oscillations. amanda sheppard F thinousa oscillation is called the oscillation in which the amplitude of the decreases and finally cut F thinousa oscillation is called the oscillation in which the amplitude of the decreases

and finally amanda sheppard cut. It is obvious that, in a descending motion, the total energy continuously amanda sheppard decreases and this is due to energy losses due to friction, resistors etc. EXAMPLES OF OSCILLATION FTHINOUSAS A simple example is the decreasing vibration A body removed amanda sheppard by A from its equilibrium position and released position p.o both small and if the friction of the floor, amanda sheppard as when a complete oscillation will return to point P. To Remove the body from its equilibrium position O and leave free at point P. The body as a complete oscillation when friction is not returned to P Without external intervention, the body will continue to oscillate with the amplitude of oscillation continuously decreases and after a certain time will stop. H oscillation of the pendulum is a z thinousa oscillation Other examples decreasing oscillation: a) The oscillation makes a body when it is hung by a spring and moves through the air, and b) The oscillation of the pendulum. In reality the macrocosm all oscillations are declining because all movements are performed by friction and resistance. STUDY OF OSCILLATION FTHINOUSAS
The forces that cause the reduction of amplitude of an oscillation can not easily prosdioristoun.Gia example air resistance is difficult to determine, because it depends amanda sheppard on the shape, the texture of the body and its speed. The reduction in width due to forces opposing the movement Decreasing the width due to forces that oppose these forces kinisi.Oi transfer energy from the system in perivallon.Gi that the mechanical energy of the system over time is reduced and the amplitude of oscillation decreases. In descending oscillation mechanical energy of the system over time and decreases the amplitude of oscillation decreases Experimentally we can study the descending oscillation with the following amanda sheppard order of schimatos.Sto free end of the spring amanda sheppard is dependent body mass m, of which binds film stiff wire a metal plate insignificant volume, which is immersed in a liquid. At the free end of the spring is dependent body mass m, of which binds thin stiff wire a metal plate insignificant volume,

which is immersed in a liquid To draw the body down slightly and then let free, then it will perform decreasing oscillation. The method of reducing the amplitude of oscillation decreasing depends on the force that resists kinisi.Afti case has great practical interest because it has been found experimentally that the force F which varies the oscillation at high is proportional to the velocity u, ie force: F = -by where: b one factor called damping constant. The decay constant b depends on the properties of the medium and by the shape and size of object kineitai.O rate which reduces the amplitude of oscillation depends on the value of the constant b. a) When the damping constant is zero oscillation is undiminished. b) Descending oscillation. The period amanda sheppard reserved