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fireflies
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I was doing the differential equation of simple harmonic motion. At a time, to bring the equation, it simply said k/m=ω2
How does it come? Is there any proof?
How does it come? Is there any proof?
It will be a + (k/m)x=0 andEJC said:a+kmx=0Now if x is displacement, differentiating once with respect to time will give you velocity of the spring and then differentiating again with respect to time will give acceleration.
Displacement of a spring can be given by
x=A∗Cos(ωt)where A is the Amplitude of motion and
ω
is the angular frequency
Now Differenting once will give velocity;
v=−AωSin(ωt)and again to give acceleration
a=−Aω2Cos(ωt)
Well I am trying that. How to find it out?nasu said:Later you will see that the meaning of this new parameter is the frequency of the motion.
jtbell said:If you don't make the substitution ##\omega^2 = k/m## during the derivation, but keep on going anyway, you eventually end up with a solution that looks something like $$x = A \sin \left( \sqrt{\frac{k}{m}} t \right)$$ At that point you might say, "Aha, that ##\sqrt{k/m}## looks like an angular frequency", and at that point define ##\omega = \sqrt{k/m}##.
Most textbooks make that definition at the beginning because they're anticipating the answer that they're leading up to.
That makes sense. Specially for circular motions. I know for circular motions it is angular freq. anyhow.jtbell said:If you don't make the substitution ##\omega^2 = k/m## during the derivation, but keep on going anyway, you eventually end up with a solution that looks something like $$x = A \sin \left( \sqrt{\frac{k}{m}} t \right)$$ At that point you might say, "Aha, that ##\sqrt{k/m}## looks like an angular frequency", and at that point define ##\omega = \sqrt{k/m}##.
The relationship between omega square (ω²), the spring constant (k), and the mass (m) is given by the equation ω² = k/m. This equation is known as the angular frequency formula and it describes the frequency of oscillations of a mass on a spring.
The value of omega square (ω²) is directly proportional to the spring constant (k) and inversely proportional to the mass (m). This means that as the spring constant increases, the frequency of oscillations also increases, and as the mass increases, the frequency decreases. Omega square is an important parameter in understanding the behavior of a mass-spring system.
The equation ω² = k/m can be derived from the equation for the period of oscillations of a mass on a spring, which is T = 2π√(m/k). By squaring both sides and rearranging, we get ω² = k/m. This equation shows the relationship between the angular frequency (ω) and the spring constant (k) and mass (m).
Yes, the value of omega square can change depending on the values of k and m. As mentioned before, omega square is directly proportional to k and inversely proportional to m. So, if the spring constant or the mass changes, the value of omega square will also change accordingly.
The value of omega square determines the frequency of oscillations of a mass on a spring. A higher value of omega square means a higher frequency of oscillations, which results in faster and more energetic movements of the mass. On the other hand, a lower value of omega square leads to a lower frequency and slower movements of the mass. Omega square is a crucial factor in understanding the dynamics of a mass-spring system.