A SHM is vibrating with certain frequency f if the energy of shm becom...
Explanation:
The energy of a Simple Harmonic Motion (SHM) is directly proportional to the square of its frequency. In other words, if we increase the energy of the SHM by a certain factor, the frequency will also increase by the square root of that factor.
Let's assume the initial frequency of the SHM is f and the energy becomes 16 times its initial value.
Step 1: Understanding the Relationship between Energy and Frequency
The energy (E) of a SHM is given by the equation:
E = (1/2)kA^2
where k is the spring constant and A is the amplitude of the motion.
The frequency (f) of the SHM is given by the equation:
f = (1/2π)√(k/m)
where m is the mass of the object undergoing SHM.
Step 2: Finding the Relationship between Energy and Frequency
We can express the energy in terms of frequency by substituting the value of k from the frequency equation into the energy equation:
E = (1/2)kA^2 = (1/2)(4π^2m^2f^2)A^2 = 2π^2m^2f^2A^2
Therefore, the energy (E) is directly proportional to the square of the frequency (f):
E ∝ f^2
Step 3: Finding the New Frequency
If the energy of the SHM becomes 16 times its initial value, we can write:
16E = 2π^2m^2f^2A^2
Dividing both sides by 2π^2m^2A^2, we get:
16E/(2π^2m^2A^2) = f^2
Simplifying further, we find:
f = √(16E/(2π^2m^2A^2)) = √(8E/(π^2m^2A^2))
Therefore, the new frequency (f) is equal to the square root of 8 times the initial energy (E) divided by π^2m^2A^2.
Conclusion:
In conclusion, if the energy of a SHM becomes sixteen times its initial value, the frequency will increase by a factor of √8.