Physics Laboratory Report Sample PHY 223 Lab Report Newton's Second Law Your Name: Partner's Full Name(s): Date Performed: Date Due: Date submitted: Lab Section: (number) Instructor: (Name) Introduction We verified Newton's Second Law for one-dimensional motion by timing an accelerated glider moving along a flat track. We varied both the accelerating force and the mass of the glider. We found that for a given force the acceleration of the glider was inversely proportional to the mass of the glider, in agreement with Newton's Second Law. Experimental Procedure Description of the Apparatus: A sketch showing the essential elements of the apparatus is presented in Figure 1. below: Figure 1 Experimental set-up The experiment was conducted using a glider (a low-friction cart) rolling on a smooth, flat, level track. One end of a string was attached to the front of the glider.
Introduction IV- Distribution of weight within the airplane DV- Distance Research Hypothesis- If the weight is in the center, than the airplane will fly further. Null Hypothesis- The weight will not make it fly further. Methodology Two airplanes were built for this study. The airplanes were each of the same design, one airplane had a paperclip in the middle for additional weight. The design is as follows: First step- Get a 8 ½ x 11 inch sheet of paper.
The string was attached to a weight on a pulley system. At the end of the system was a motion sensor that recorded the position, velocity, and acceleration of the glider. The lab draws on the concepts of force and Newton’s Laws of Motion, specifically Newton’s Second Law which states: the acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to the object’s mass. The equation Net Force = Mass x Acceleration (Fnet = mass x acceleration) is derived from this definition. Air tracks were used to reduce friction; the small amount of friction left in the system will be considered negligible in the data.
Foundation Degree in Aircraft Engineering understanding lift and drag on a model airfoil using windtunnel tests Word COUNT: 2495 Ae1324: aerodynamics Prepared For: Mr. Liu Wing Tim Lecturer Air Transport Training College By: Thipak S/O Gobi Nathan Class: FD 6 Date of Submission: 10 October 2012 ABSTRACT This report contains the full analysis of the wind tunnel testing experiment which was conducted on the 16/08/12. The observations and results are tabulated and discussed in depth. There are 4 segments to the report. Firstly, the equipment and apparatus used was briefly introduced. Thereafter, the relationship between drag and lift with regards to wind speeds was analysed.
Then the class is asked to evaluate these values and determine if the values make sense and if there are any abnormalities. Determine CL, D, CD, CDi, CDo, L/D in cruise at 4 conditions (power settings), Calculate the contributions of skin friction to CDo in each of the above conditions, Determine CLmax with and without flaps, Determine CLmaxL/D, CLminPR . Plot CDi, CDo, CD, CLmax on a graph as a function of CL What else can you determine with the takeoff distance provided? Assumptions: Assume steady level flight at the given power setting. Assume that Swet was twice the wing area and the area of the fuselage and tail was approximately a cylinder with a diameter of 10 ft and a length of 30 ft.
4- We measured the rockets range using a measuring tape. 5- Record the rockets range on the “varying wing size “ complete the data sheet, including calculating the average range for each wing size. 6- Analyze the data generated from the launches and write a conclusion explaning how the difference in wing size affects the rocket that achieved the greatest range. Data table – Size ~ Wingspan ~ Launch Rocket A- Small ~ 2mm ~ 533 Rocket B- Medium ~ 4mm ~ 376 Rocket C- Large ~ 5mm ~
Weightlessness happens or is met when the downward acceleration of the set is equal to the acceleration of gravity. This is also an example of free falling where you feel this weightlessness (a weigh scale would read zero). As with the aircraft weightlessness occurs any time the aircraft is accelerating downward with an acceleration of 1g. Just as with a ballistic trajectory. Lastly when a person stands on a bathroom scale, it measures the weight because gravity is pulling down on the person.
Length of the glider: 10 centimeters ½ (200 g + 189.3 g / 1000) (1.11)2 ½ (.389300) (1.232100) .239828 J .240 J 5. W = ½ M (Vf 2 – Vi2 ) ½ (189.3) (.2402 - .0272) (94.650000)(.056871) 5.382840 J 5.38 J Questions 1. What force does the work? Kinetic energy is the force that does the work. 2.
* Smart pulley, used at the end of the track as a pulley system between the bigger and smaller masses. Principles The principles used in the experiment would be Newton’s Second Law, which says that the behavior of objects under a net force is Fnet=ma, and net force is the sum of all forces acting on an object, Fnet=F. The experiment also uses principles of Tension “T” and the force of gravity “Fg”, which is equal to 9.8 m/s². Procedure Part A * Take the mass of the cart: 253.0 g * Add a 10g weight to the 1.0 g paper clip, making smaller mass 11.0g * Record the slope of the line of run #1 after releasing the cart to the end of the track. (y = 0.355x + 0.119) * Repeat with another 10g weight, making smaller mass 21.0g * Record the slope of the line after run #2 (y = 0.672x + 0.155) * Repeat with another 10g weight, making smaller mass 31.0g * Record the slope of the line after run #3 (y = 0.966x + 0.268) * Repeat with another 10g weight, making smaller mass 41.0g * Record the slope of the line after run #4 (y = 1.27x + 0.135) * Repeat with another 10g weight, making smaller mass 51.0g * Record the slope of the line after run #5 (y = 1.46x + 0.294) * Calculate the acceleration for each run using a =
5. Place the motion sensor near the pulley system and begin the first trial run. Make sure to record the initial weight of the hanger with the weights and the weight of the cart. 6. Repeat the trial run by each time adding more weight to the hanging weight.