 The Laboratory 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: Grading Rubrics (coming soon) Lab NM1:  Pass the Water Lab Question:  Under what conditions is water most likely to spill from a pan when the pan is carried around an oval race track? Purpose:  To carry a pan of water around an oval race track in an effort to determine the conditions under which the water is most likely to be spilled from the pan. A complete lab write-up includes a Title, a Purpose, a Data section (which includes a diagram of the oval track and identified locations of water spillage), a Conclusion and a Discussion of Results.  As usual, the Conclusion should answer the question proposed in the purpose of the lab.  The Discussion of Results should include a discussion of the relationship between your findings and Newton's first law of motion. Lab NM2: Galileo for a Day Question:  What effect does minimizing friction have upon the motion of an object after an initial push is applied to it? Purpose:  To determine the effect of minimizing friction upon the subsequent motion of an object after  it is set in motion by an initial push. A complete lab write-up includes a Title, a Purpose, a Data section, a Conclusion, a Discussion of Results and Post Lab Questions. The Data section should include a velocity-time graph with several lines or several velocity-time graphs with one line;  the graphs should be labeled and communicate the effect of minimizing friction upon the subsequent motion of the object. The Conclusion should respond to the question raised in the Purpose of the lab (as always). The Discussion of Results section should reference the Data section and discuss the supporting evidence for the conclusion; a statement should be made about the expected result under a condition of no friction.  The sheet of Post-Lab questions should be answered and posted into your notebook. Lab NM3: Wait! Hmmm.  Gee.  Lab Question:What is the relationship between the mass of an object and the force of gravity which acts upon the object? Purpose:  To determine the mathematical relationship (i.e., the equation) which relates an object's mass (m) to the force of gravity (Fgrav) that acts upon the mass. 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 data and a plot of the data;  the results of a linear regression analysis should also be included.  Class data should be reported. The Conclusion should respond to the question raised in the Purpose of the lab (as always). The Discussion of Results section should reference the Data section and discuss the supporting evidence for the conclusion.  An error analysis should be included. Lab NM4.    F-m-a Relationship Question:  What effect does varying force and varying mass have upon the acceleration? Purpose:  To use experimental data to determine the mathematical equation which relates force, mass and acceleration. 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 two acceleration-force graphs (one for each mass) with a sketch of the plotted points, the best estimate on the slope of the line, and an indication of the mass of the cart.  Class data should be included for the other lab groups.  The Conclusion should respond to the question raised in the Purpose of the lab (as always). The Discussion of Results section should reference the Data section and thoroughly discuss the supporting evidence for the conclusion.  The effect of mass and the meaning of the slope of the line should be clearly discussed. Lab NM5.    Coffee Filter Skydiver Lab Question:  How does the velocity and acceleration of a falling object change over time when under the dual influence of gravity and air resistance? Purpose:  To describe how the velocity and acceleration of an object change over time when falling under the dual influence of gravity and air resistance and to explain why such changes are observed. A complete lab write-up includes a Title, a Purpose, a Data section, a Conclusion/Discussion of Results. The Data section should include velocity-time and acceleration-time graphs for a falling filter.  The Conclusion/Discussion should reference the data to describe how the velocity and acceleration of the falling filter changed over time. An effort should be made to use the theoretical model of Newton’s laws of motion to thoroughly explain why such changes occurred.   Lab NM6.  From a Feather to an Elephant Lab Question:  What effect does varying mass have upon the terminal velocity value of an object which is falling under the dual influence of gravity and air resistance? Purpose:  To describe the effect of varying mass upon the ultimate terminal velocity value of an object which is falling under the dual influence of gravity and air resistance. A complete lab write-up includes a Title, a Purpose, a Data section, a Conclusion/Discussion of Results. The Data section should include velocity-time graphs for several trials of varying number of filters.  Relative values of the terminal velocity should somehow be indicated for the various numbers of filters so as to make a conclusion possible.  The Conclusion/Discussion should reference the data to describe how varying mass effected the terminal velocity value (provided such a conclusion can be supported by the data). Lab NM7.  Sliding Friction Lab Question:  What is the value of the coefficients of static and sliding friction between two surfaces? Purpose:  To determine use methods of graphical analysis to determine the coefficients of static and kinetic friction between two surfaces. 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 columns. Sketches of the plots of Ffrict versus Fnorm should be included and the results of a linear regression analysis should be reported.  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. Lab NM8.    Getting Hung Up by Tension Lab Question:  What is the result of conducting a force analysis on an object at equilibrium? Purpose:  To conduct three different equilibrium analyses in order to determine the net force upon three different objects. A complete lab write-up includes a Title, a Purpose, a Data section, and a Conclusion/Discussion of Results.  The Data section should include a diagram of the three situations being analyzed with the magnitude and direction of all forces clearly stated on the diagram;  a labeling convention (e.g., A= , B= , C= , etc.) should be used to distinguish between the forces. Calculations and analysis should be clearly shown. A net force should be determined. The Conclusion/Discussion should identify the calculated net force for the three situations and should include an error analysis for each situation. Lab NM9.    Sign Hanging Lab Question:  How does the measured tension in the string supporting a sign compare to the theoretically predicted value? Purpose:  To compare the measured tension in the string supporting a sign to the tension that would be theoretically predicted based on the mass of the sign and the angle the two strings make with the horizontal. A complete lab write-up includes a Title, a Purpose, a Data section, and a Conclusion/Discussion of Results.  The Data section should include a diagram of the sign and supporting strings;  strategic measurements should be recorded on the diagram. Calculations of the theoretically predicted tension should be clearly shown in an organized fashion beginning with a force triangle. The Conclusion/Discussion should answer the question posed in the Purpose and include an error analysis with a percent difference calculation. Lab NM10.    Exploring Inclined Planes Question:  How is the weight of an object mathematically related to the component of the weight directed parallel to the inclined plane? Purpose:  To determine the mathematical equation which relates the weight of an object to the component of the weight that is directed parallel to an inclined plane. 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 diagram of the inclined plane to which you were assigned, with measurements included on the diagram.  Class data for the various incline angles should be recorded.  Some form of analysis leading up to an equation should be documented in the Data section.  The Conclusion should state the mathematical relationship in both words and an equation. The Discussion of Results should thoroughly explain the logical connection between the collected data and the conclusion.    Lab NM11.    Science Friction Adventure Lab Question:  What is the coefficient of friction for a wood block on a metal track and what is the maximum angle at which the track can be inclined before the block accelerates from rest?  How are these two values related? Purpose:  To determine the coefficient of static friction for a wooden block on a metal track and to relate this coefficient to the maximum angle at which the track can be inclined before the block accelerates from rest. A complete lab write-up includes a Title, a Purpose, a Data section, a Conclusion and a Discussion of Results.  The Data should section include a table of data capable of determining the coefficient of friction and an analysis of the data in order to determine the coefficient of static friction.  The Data should also include the result of several trial in which the threshold angle at which acceleration from rest occurs for the wood block on the incline. Outliers should be identified and an average value reported. The Conclusion should answer the two questions posed in the Purpose.  The Discussion of Results should include a discussion of the expected threshold angle based on the coefficient of friction; the reasoning for the expectation should be clearly explained.  An error analysis with a percent difference should also be included. Lab NM12.    Making the Turn Lab Question:  What is the direction of the velocity of and the net force upon a passenger in a car which is making a left hand turn? Purpose:  To describe the direction of the velocity of and the net force on a passenger in a car which is making a left hand turn - with and without a car door. A complete lab write-up includes a Title, Purpose, Data section, and a Conclusion/Discussion of Results. The Data section should include an organized and informative record of your observations of the motion of the ball relative to the board using both words and a diagram. The Conclusion/Discussion should answer the question posed in the Purpose and cite the evidence (observations) which support such a conclusion.   Lab NM13.    World Peace Lab Question:  How does the strength of the tension force on a bucket when at the top of a vertical loop compare to the strength of the tension force when at the bottom of the loop? Purpose:  To determine the relative strength of the tension force on a bucket when it is at the top and at the bottom of the vertical loop through which it moves. A complete lab write-up includes a Title, a Purpose, a Data section, a Conclusion/Discussion of Results and Post-Lab Questions. The Data section should include an organized and informative record of your observations of the tightness of the string around your hand for the two locations. The Conclusion/Discussion should discuss and answer the question raised in the Purpose of the lab. And the Post-Lab Questions section should include the provided page of post-lab analysis questions. The Physics Classroom || Google Docs  || WebAssign