In a prototype of a BMMD, six different springs are available for testing with the device. The six springs are very similar, but with different restoring constant k. A student decides to test the device with all springs to estimate the value of his body mass. Thus, he measured 4 oscillation periods for each spring and calculated the average of the periods to obtain six pairs of data (k,7), as shown in Table 1 and Figure 1. Table 1. Results of the average oscillation period for each spring of known constant in a BMMD. Spring constant k ± 0,001 kg/s² Oscillation period T ± 0,001 s 455,000 2,684 480,000 2,613 515,000 2,522 590,000 2,357 712,000 2,145 900,000 1,955 Answer the following questions based on the information provided and the operating fundamentals of the BMMD. A. Plot T as a function of k. Justify why it is not a linear relationship and explain why it has a decreasing or increasing trend. Figure 1 Graph of Period of oscillation (T) as a function of spring constant (k). Period of oscillation (T) as a function of spring constant (k) 2,700 2,684
Simple harmonic motion
Simple harmonic motion is a type of periodic motion in which an object undergoes oscillatory motion. The restoring force exerted by the object exhibiting SHM is proportional to the displacement from the equilibrium position. The force is directed towards the mean position. We see many examples of SHM around us, common ones are the motion of a pendulum, spring and vibration of strings in musical instruments, and so on.
Simple Pendulum
A simple pendulum comprises a heavy mass (called bob) attached to one end of the weightless and flexible string.
Oscillation
In Physics, oscillation means a repetitive motion that happens in a variation with respect to time. There is usually a central value, where the object would be at rest. Additionally, there are two or more positions between which the repetitive motion takes place. In mathematics, oscillations can also be described as vibrations. The most common examples of oscillation that is seen in daily lives include the alternating current (AC) or the motion of a moving pendulum.
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