By Jerry D. Wilson
This market-leading handbook for the first-year physics laboratory path bargains quite a lot of class-tested experiments designed in particular to be used in small to mid-size lab courses. a sequence of built-in experiments emphasizes using automated instrumentation and incorporates a set of "computer-assisted experiments" to permit scholars and teachers to achieve event with glossy apparatus. this selection additionally permits teachers to figure out the correct stability among conventional and computer-based experiments for his or her classes. by way of interpreting information via varied equipment, scholars achieve a better realizing of the ideas at the back of the experiments. The 7th variation is up to date with the most recent info and strategies related to cutting-edge apparatus, and a brand new Guided studying characteristic addresses the transforming into curiosity in guided-inquiry pedagogy. Fourteen extra experiments also are to be had via customized printing.
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Extra info for Physics Laboratory Experiments
Example text
For example, Eq. 2) provides a means for experimentally determining g, the acceleration due to gravity, by measuring the pendulum parameters of length and period, as was done previously. 3) or L5 g T2 4p2 Hence, the equation has the form y 5 ax2, that of a parabola. This can be plotted as a straight line with the general form y 5 ax by letting L 5 y and x 5 T 2, that is, plotting T 2 on the X-axis. The line will have a slope of a 5 g/4p2. 8. Plot L versus T 2 for the best experimental data (lowest percent error) in Data Table 3 and determine the slope of the graph.
1. Describe what is meant by the scientific method and how it is applied. 2. What are the physical parameters in the investigation of a simple pendulum? 3. A period is an interval of time. How is this applied to a pendulum? 4. What is the difference between an independent variable and a dependent variable? Give an example of each. (continued) 37 E X P E R I M E N T 3 5. How does the period of a pendulum vary theoretically with (a) length, (b) mass of bob, (c) angular displacement? 6. How will you experimentally check the theoretical predictions in the preceding question?
Use the following equipment to determine the acceleration due to gravity (g). (continued) 47 E X P E R I M E N T 4 EQUIPMENT NEEDED • • • • 3 objects of different masses (for example, steel balls and/or lead weights) Meter stick Laboratory timer or stopwatch One sheet of graph paper Review the definition of acceleration. Which of the quantities involved can be directly measured with the given equipment? The defining equation is not practical to use in many cases. However, the units for acceleration are distance and time (m/s2), and these quantities can be measured with the equipment given.