A spring stretches by 0.3 m when a mass of 1.0 kg is hung from it. The spring is stretched by a further 0.2 m from this equilibrium point and released so that the mass oscillates up and down with simple harmonic motion. (c) Sketch a graph of the displacement of the mass as a function of time, for the first three cycles of the periodic motion, indicating the magnitude of both the period and amplitude of the oscillation. Indicate on your sketch positions within the period motion where: (i) The speed of the mass is a maximum (label these vmax) (ii) The acceleration of the mass has its maximum magnitude (label these amax) (d) Calculate the maximum speed and maximum magnitude of the acceleration of the mass.
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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