Effect of tension on resonance and amplitudePLANNINGPurposeThe purpose of the experiment is to investigate the effect of tension on the resonance and amplitude of a string.Basic Personal knowledgeThis experiment is based on resonance , frequency and amplitude. From what I have learned in class and in everyday life, I know that when a string of any kind is plucked, it moves back and forth. The movement causes the air molecules around it to vibrate. When it moves fast enough, the vibrations make a sound. Research Some research has been carried out on the principles on which the experiment is based. The frequency of an oscillation is defined as the number of cycles performed per unit time (Salters Horners Advanced Physics) for a spring is the time it takes to move back and forth once it reaches its frequency. Frequency is measured in Hertz (Hz). Every object has its own natural frequency. (Physics for You by KeithJohnson). Resonance occurs when the applied frequency is equal to the natural frequency of the object. Therefore, when the string to be used in the experiment is plucked and the applied frequency is equal to its natural frequency, resonance occurs. The resonant frequency of a string can be increased by:* Shortening the length *Increasing the tension* Using a lighter stringVariables and ConstantsThe experiment is basically about the effect that tension will have on frequency and amplitude. Therefore the fundamental variable will be the tension of the string. The constant in this case will be the thickness of the string, since it will not be changed. This should ensure that the experiment is accurate enough since its thickness can affect the resonance. Application of Principles The principles of frequency, resonance, and amplitude are widely applied in many engineering projects. Understanding the above principle is vital to ensuring bridges are safe to travel on.