An astronaut on a distant planet wants to measure the acceleration due to gravity there by timing pulses (waves) travelling along a wire fixed at each end and with a mass hanging from it (i.e. hanging mass is causing a tension in the wire). She has measured the length and mass of the wire to be 1.57 metres and 4.38 grams. The mass hanging from the wire is 3.5 kgs. If the pulse takes 36.2 milliseconds to travel the full length of the wire, calculate the acceleration due to gravity on the planet without using any astronomical data like the mass of the planet etc.
Properties of sound
A sound wave is a mechanical wave (or mechanical vibration) that transit through media such as gas (air), liquid (water), and solid (wood).
Quality Of Sound
A sound or a sound wave is defined as the energy produced due to the vibrations of particles in a medium. When any medium produces a disturbance or vibrations, it causes a movement in the air particles which produces sound waves. Molecules in the air vibrate about a certain average position and create compressions and rarefactions. This is called pitch which is defined as the frequency of sound. The frequency is defined as the number of oscillations in pressure per second.
Categories of Sound Wave
People perceive sound in different ways, like a medico student takes sound as vibration produced by objects reaching the human eardrum. A physicist perceives sound as vibration produced by an object, which produces disturbances in nearby air molecules that travel further. Both of them describe it as vibration generated by an object, the difference is one talks about how it is received and other deals with how it travels and propagates across various mediums.
An astronaut on a distant planet wants to measure the acceleration due to gravity there by timing pulses (waves) travelling along a wire fixed at each end and with a mass hanging from it (i.e. hanging mass is causing a tension in the wire). She has measured the length and mass of the wire to be 1.57 metres and 4.38 grams. The mass hanging from the wire is 3.5 kgs. If the pulse takes 36.2 milliseconds to travel the full length of the wire, calculate the acceleration due to gravity on the planet without using any astronomical data like the mass of the planet etc. (Units expected m/s/s [i.e. give your numerical answer and then space and then m/s/s])
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