 The Laboratory Home || Unit Schedules || The Laboratory || Google Drive || Online Textbook  WebAssign || Minds On Physics || Physics Interactives || The Physics Classroom All lab work should be completed in your course notebook and be recorded on the right side of the open notebook. If you come to the end of the page, you must of course turn the page over and continue writing on the back of the page on the right side of the page of the open notebook. Any accompanying sheets must be taped, glued, stapled or somehow attached to the lab notebook; scotch tape is always available in the room. Scoring Rubrics for each lab are available online. These will also be distributed in class a couple days prior to notebook collection. View: Scoring Rubric (not yet ready) Lab NFA1:  Crossing the River Question: For a boat heading straight across a river, how does an change in the boat speed effect the crossing time and the downstream distance?  How does a change in current speed effect the crossing time and the downstream distance? Purpose:  To determine the effect of varying boat speeds on the crossing time and the downstream distance for a boat which heads straight across a river   AND   to determine the effect of varying current speeds on the crossing time and the downstream distance for a boat which heads straight across a river. A complete lab write-up includes a Title, a Purpose, a Data section, and a Conclusion/Discussion. The Data section should include suitable data for investigating the purpose; the data should be organized in tables with column headings and units.  The organization of data should reflect your ability to systematically conduct an investigation. The Conclusion/Discussion should respond to the multi-part Purpose of the lab; each conclusion should reference appropriate data in order to provide supporting evidence. Lab NFA2:  Projected Distance Question: What is the mathematical relationship between the horizontal displacement (d) and the original speed (vo) of a ball rolling off a desk? Purpose: To determine the mathematical relationship between the horizontal displacement (d) and the original speed (vo) of a ball rolling off a desk. A complete lab write-up includes a Title, a Purpose, a Data section, and a Conclusion/Discussion. The Data section should include a table of d-vo data with labeled columns and units; many, many trials (>10) should be included. A plot of d vs. vo should be constructed and included in the lab report as either a printout or a sketch; a best-fit line and linear regression statistics  (slope, y-intercept and regression constant) should be included. The Conclusion/Discussion should state the mathematical relationship between the studied variables using qualitative terms (As the original speed increases, ...) and using a mathematical equation. The value of the slope should be compared to classmates and it's meaning should be discussed. An expected value for the slope should be stated and the manner in which it was calculated should be explained. A percent error should be calculated; show your work. Lab NFA3:  Basketball Analysis Question:  How can the changes (or lack of changes) in the motion quantities (position, velocity and acceleration) of a projectile be described over the course of time? Purpose:  To describe how the motion quantities (position, velocity and acceleration) of a projectile change (or don't change) over the course of time. A complete lab write-up includes a Title, a Purpose, a Data section, and a Conclusion/Discussion. The Data section includes plots of the dx and dy values with respect to time, plots of the vx and vy values with respect to time and plots of the ax and ay values with respect to time.  All plots should be clearly labeled.  Slope values for the two velocity graphs should be shown and labeled beside each graph.  The Conclusion/Discussion should use words to thoroughly respond to the question raised in the Purpose.  For each conclusion statement, at least one piece of supporting evidence should be provided; six sentences would be the minimum amount of writing. Lab NFA4.   Launcher Speed Question:  What is the launch speed of the projectile launcher? Purpose:  To determine the launch speed of the projectile launcher. A complete lab write-up includes a Title, a Purpose, a Data section, and a Conclusion. The Data section should include a diagram of the experimental setup with measured distances (or customary symbols for pertinent quantities) indicated on the diagram. There should be several trials of good dx data values; units should be indicated. An average dx value should be reported and subsequently used to calculate the launch speed. The calculations should be organized and clear, identifying the symbols of the variables being used in multiplication and division steps in addition to the numerical quantities.  The Conclusion should include a claim that responds to the question raised in the Purpose (as always). Lab NFA5.   Maximum Range Lab Question:  How does the angle of launch effect the range of an angle-launched projectile and what angle provides for the maximum range? Purpose:  To determine the effect of the angle of launch upon the range (i.e., the horizontal displacement) of an angle-launched projectile and to determine the angle which results in the maximum range. A complete lab write-up includes a Title, a Purpose, a Data section, a Conclusion and a Discussion of Results. The Data section should include a print out of the Logger Pro data table and graph. The Conclusion should respond to the two questions raised in the Purpose of the lab. The Discussion of Results should include theoretical predictions of range for 30°, 45° and 60°. Work should be clearly organized and shown. An error analysis should be included in which you describe how well you did along with an percent error calculation (as always, show your work). Lab NFA6.   Hit the Target 1 Question:  Given the horizontal distance from a projectile launcher to a target, at what height must the target be placed in order for the projectile to strike it? Purpose:  To predict the height at which a target must be placed upon a vertical board a given distance from the angled launcher in order for the projectile to strike the target. A complete lab write-up includes a Title, a Purpose, a Data section, and a Conclusion/Discussion. The Data section should include a diagram of the experimental set-up with distances and angles listed upon the diagram. The launch speed (from previous lab) should be listed. A complete and organized solution to the challenge should be shown. Calculations should identify the symbols of the variables being used in multiplication and division steps in addition to the numerical quantities. A percent error analysis should be performed; work should be shown and labeled. The Conclusion/Discussion should state the predicted height and identify whether the result was successful or not. Lab NFA7.   Hit the Target 2 Question:  Given the initial height and the launch angle, at what horizontal distance must the target be placed in order for the projectile to strike it? Purpose:  To predict the horizontal distance from a projectile launcher that a target must be placed in order for the projectile to strike the target. A complete lab write-up includes a Title, a Purpose, a Data section, and a Conclusion/Discussion. The Data section should include a diagram of the experimental set-up with distances and angles listed upon the diagram. The launch speed (from previous lab) should be listed. A complete and organized solution to the challenge should be shown. Calculations should identify the symbols of the variables being used in multiplication and division steps in addition to the numerical quantities. A percent error analysis should be performed; work should be shown and labeled. The Conclusion/Discussion should state the predicted height and identify whether the result was successful or not. Lab NFA8:  Friction Lab Question:  What is the value of the coefficients of sliding friction between a wood block and the table top? Purpose:  To determine use methods of graphical analysis to determine the coefficients of sliding friction between a wood block and the table top. A complete lab write-up includes a Title, a Purpose, a Data section, a Conclusion, and a Discussion of Results. The Data section should include a table of collected data organized in labeled column with plots of Ffrict versus Fnorm; simply use a printout of the provided Logger Pro plot. A linear regression analysis should be included on the graph.  The Conclusion should respond to the question raised in the Purpose of the lab.  The Discussion of Results should explain the logical connection between the graphical information and the coefficient of friction values. That is, use some detail and good logic to explain the reason you can conclude that the µ value is as stated; make references to your data section. Lab NFA9:  Science Friction Adventure Question:  What is the maximum angle at which the track can be inclined before the block accelerates from rest?  What acceleration will the block have if this angle is exceeded? Purpose:  To determine the threshhold angle at which a wooden block accelerates down a metal track and to determine the acceleration the block has when this angle is exceeded. A complete lab write-up includes a Title, a Purpose, a Data section, a Conclusion and a Discussion of Results.  The Data should be organized into two parts - one for each part of the lab. Data should be displayed in tables with clearly written column labels and indicated units. Any graphs or other supporting data required to accomplish the purpose should be included in the Data section.  The Conclusion should answer the two questions posed in the Purpose.  The Discussion of Results should also include a theoretical analysis of your two situations in which you use a Free-body diagram and Fnet = m•a to calculate the coefficient of friction. Both of these discussions - threshhold angle calculation and acceleration calculation do not need to be in  paragraph form; they can (and should) be nicely laid-out solutions with free-body diagrams, stated formulas with substitutions and algebraic manipulations.  All work should be clear. Lab NFA10:  Two Body Lab Question: What is the acceleration value of an object for three different pulley systems? Purpose: To determine the experimental acceleration of an object for three different pulley systems and to conduct an analysis of each pulley system in order to predict the theoretical acceleration for each system. A complete lab write-up includes a Title, a Purpose, a Data section, a Conclusion and a Discussion of Results. Data section should include a diagram of each pulley system being studied. Relevant values (mass, angle, mu, tension, etc.) should be recorded on the diagram; acceleration values for at least three trials should be reported and then averaged. The Conclusion should (as always) respond to the question raised in the Purpose, stating the acceleration for each of the three pulley systems. The Discussion of Results should include an extensive and organized physical analysis of each pulley system in order to determine the theoretical or expected value of the acceleration. Your work in the Discussion section should be organized, labeled and annotated; use up some pages. Be complete; include free-body diagrams; write an Fnet = m•a equation; show the steps of your solution leading up to the value of acceleration. A percent error calculation should be performed (showing work) and the results should be evaluated. Home || Unit Schedules || The Laboratory || Google Drive || Online Textbook  WebAssign || Minds On Physics || Physics Interactives || The Physics Classroom