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[Ended]Physics Tutoring Session #6 on Simple Harmonic Motion @ 3-4PM Today (Friday 26th Feb. 2016)
Physics
Chima Sunday (Tutor)
26-02-2016 13:58:00 +0000The concept of Simple Harmonic Motion is one of the most fundamental in Mechanics, often tested in JAMB and other exams. so lets take a quick look into this topics. Welcome and enjoy your time.
This session has ended for today
Simple Harmonic Motion(S.H.M.) is a type of periodic motion whose acceleration is directed towards a fixed point is proportional to its distance or maximum displacement attained from its rest equilibrium position. The force F generated by the acceleration a is in such a way as to always take the body back to its equilibrium position. This force is called restoring force.
Definition of terms
a)Period T is the time to complete one revolution. It is measured in second(s)
b)Frequency f is the number of complete revolution per unit of time. It is measured in per second
c)Amplitude A is the maximum displacement of the body from the equilibrium position. It is measured in meter
d)Damped Oscillation is a type of S.H.M whose amplitude gradually attenuates with time, due to air resistance.
e)Forced Vibration is a type resulting from an external periodic force acting on a system. e.g is the vibrating bridge due to the marching of soldiers, turning fork vibrating when exposed to the periodic force of a sound wave.
f)Resonance this a vibration set up in a body due to a transfer of energy from another body which is vibrating with a period same or nearly same that of the first natural frequency. It is seen in the rattling of window when a low flying aeroplane passes over head.
Some Important Features
1)The period T is directly proportional to the square root of the length of the pendulum l
2)When displacement is maximum potential energy is maximum and kinetic energy is minimum and vice versa
3)As the body moves from its rest position to its maximum amplitude, speed decreases, and vice versa.
So sit tight and enjoy your time. Once again Welcome!
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Chima Sunday (Tutor)
Hello everybody and welcome once again and again to our today's tutoring section. Come with your questions and writing materials and lets make today another day. Thanks. Still your one and only, my Humble self ............? YOU ARE WELCOME!
0 26-02-2016 14:04:00 +0000
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Gideon Lavezzi
a particle of mass 0. 25kg vibrates with a period of 2.0s. if it's greatest displacement is 0.4, what is its maximum kinetic energy?
0 26-02-2016 14:04:00 +0000
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Chima Sunday (Tutor)
@CHUMA AGUGBUE your thought is right, were w is the angular velocity
0 26-02-2016 14:12:00 +0000
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