Notes on the uniform circular motion
This guide will put some notes in physics, useful for high school, the Uniform circular motion. Starting from the definition: true uniform circular motion that motion to a body that is making a move to speed continuous form , on a flat surface with a circular path , that travels equal arcs of circumference in equal times. In uniform circular motion, the speed remains constant but its direction and its direction are constantly changing, which is why we speak of accelerated motion.
Here are some examples of bodies that perform a Uniform circular motion : the Moon, quite rough around the Earth makes a uniform circular motion in a magnetic field, the charged particles perform circular paths, the carousel of children is imprinted this motion as the planets that revolve around the Sun, we can say that the Uniform circular motion is a periodic motion, because, you always repeated the same in equal time intervals. ‘s an example: If a point it takes 4 seconds to make one complete revolution , 8 seconds past will have done 2 rounds and after 12 seconds the rpm will be 3, this time taken by a particle to travel all the way around, on the circumference , in uniform motion, is called Period and is commonly referred to by the letter T. In the International System , SI, the unit of measurement is the second, denoted by the letter s.
You can find the period T, if we know the frequency of the motion, where the frequency is the number of laps completed in one second and is denoted by f. The frequency in S. I: is the Herz what we mean by reason Hz 1Hz = 1 revolution per second . A point along if one revolution per second will have a frequency of 1 Hz. If we are aware of the period of a uniform circular motion, we can easily calculate the frequency f, by applying the following formula: f = 1 / T On the contrary if it is given the frequency f. One can calculate the period of the motion with the inverse formula: T = 1 / f
Let us now consider the tangential speed of the Moto uniform circular take the point P, which runs along the circumference with uniform motion, the space that covers you if along the entire circumference of the circle is equal to the measure itself. One can therefore say that if we denote the radius of the circle with r, the tangential velocity v = circumference / T that is: v = 2πr / T.