A0 Int Lab 1 - First Introductory Lab Instruments and...

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First Introductory Lab Instruments and Measuring Devices What we want to strive for in this lab is pure observation. Don’t let any theory color your observations. Experience the excitement of discovery! Practice how to use all the available measuring devices and how to read their scales. All measurements should be performed more than once then find the average value. In any lab session, you can work in twos (preferred) or (maximum) threes. Objectives: When you complete this experiment, you will be able to: Make length measurements by using and reading the scale of: the vernier and micrometer calipers, and the metric ruler. Use the triple beam balance to measure masses. Use the stopwatch to measure intervals of time. Make units conversions and get familiar with the more common metric prefixes. Use the cgs or SI system of units. Express the experimental results in appropriate numerical values with units and represent the measurement data in graphical form. Practice graphing procedures and plotting data. Study the best fitting straight line and the physical implications of the various constants involved in its mathematical equation. Exercise 1: Hang up a spring. Put a mass on it, it stretches. Stretch it further, it starts to oscillate. Repeat. Isn’t it funny? Physics is fun! Now you can think about terms such as observations, qualitative analysis, cause and effect, and reproducibility. How do you turn this procedure into a systematic quantitative analysis? How far does a given mass stretch for a given spring? You have a couple of springs, a mass set, and a meter stick. Two sets of data can be recorded i.e. the mass (in g ) and elongation x (in cm). Two points of interest in measure x : (1) Measure the distance from a stationary point (e.g. the highest point of the spring) to the lowest point of the weight holder, and (2) take your readings perpendicular to the meter stick.
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  • Spring '11
  • WagihGhobriel
  • International System of Units, Centimetre gram second system of units, Measuring Devices, fitting straight line

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