One end of a string was attached to the front of the glider. From the glider the string passed over a pulley mounted at the end of the track, and then downward to a weight hanger hooked to its lower end. Because of the very low friction of the glider's wheels and of the pulley, any weight hung on the string resulted in a horizontal force pulling the glider along the track. By varying either the amount of mass placed on the weight hanger or the amount of extra mass loaded on the glider, we could vary the acceleration of the glider. Outline of technique: Two photogates were set alongside the track about 0.5 m apart.
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.
We decided to use two pieces of paper to make a single airplane; this was our way to make it heavier, as weight was our independent variable. After selecting our dependent and independent variables, it was on to choose a hypothesis that captured our thoughts. We hypothesized that the plane that was made from the two pieces of paper would fly a longer distance than the one made from a single piece of paper. This would also act as our alternative hypothesis. Our statement of equality, or our null hypothesis would be that the weight of the paper planes would not yield significant differences in the distance traveled by the two.
The first thing one would notice is the difference in size between the two aircrafts. The small, yet mighty, Super Cub is renowned for it’s great performance abilities and are often characterized aesthetically by their rugged appearance. The body is narrow and can seat just 2 people comfortably, including the pilot. Once the passenger has been seated and the plane has taken off, both the passenger and the pilot will remain seated in that position until landed. There is no moving about the cabin or using the restroom, so it is encouraged to use the restroom before airborne.
The components of the supercharger, how the supercharger operates on your engine and what the supercharger will produce. There are four main components when dealing with a twin screw supercharger. The first main component that is vital to any twin screw is the rotors. They look like two big screws laying parallel to each other. The rotors rotate counter of each other causing air to be compressed in small air pockets.
Thereafter, the relationship between drag and lift with regards to wind speeds was analysed. Thirdly, the relationship between the lift forces generated on an aerofoil with varying angles of attack was analysed. Finally, the relationship between Reynolds number and wind tunnel testing was briefly described. The report is then concluded with a list of recommendations to improve further wind tunnel testing in terms of accuracy. ------------------------------------------------- Content Page ABSTRACT 2 CONTENT PAGE 3 1.0 INTRODUCTION 4 1.1 Purpose 4 1.2 Background Information 4 1.3 Methodology 4 1.4 Scope 4 2.0 EQUIPMENTS AND APPARATUS 5 2.1 Wind Tunnel 5 2.2 Asymmetrical Aerofoil 5 2.3 360° Protractor 6 3.0 PROCEDURES 7 3.1 Experiment 1 : Familiarization of wind tunnel 7 3.2 Experiment 2: Measuring Drag 8 3.3 Experiment 3: Measuring Lift 8 3.4 Experiment 4: Investigating Angle of Attack 8 4.0 RESULTS AND OBSERVATIONS 9 4.1 Drag vs. Wind Speed 9 4.2 Lift vs. Wind Speed 10 4.3 Lift vs.
Name _____________________ Date _________ Acceleration of a Cart on an Inclined Plane Equipment Needed Photogate and Bracket Bumper Base and Support Rod Qty 1 1 1 Equipment Needed Dynamics Cart (inc. w/ Track) Ruler 1.2 m Track System (ME-9429A) Qty 1 1 1 What Do You Think? What happens to the acceleration of a cart as it moves up and down an inclined plane? Background If a cart moves on a plane that is inclined at an angle θ, the component of the gravitational force acting on the cart in a direction that is parallel to the surface of the plane is mgsinθ, where m is the mass of the cart and g is the acceleration due to gravity. The acceleration of the cart, in the absence of friction, should be gsinθ, both up and down the inclined plane. The acceleration is not expected to depend on the mass of the cart.
2. Why is the decrease of air pressure with increasing altitude more rapid when the air is cold? Cold air is associated with low pressure. So the inherently low-pressure air loses pressure more rapidly as the altitude increases. Air pressure drops more rapidly with altitude in a column of cold air.
The Ryanair strategy is to keep paring away at fixed costs and increase the passenger load per aircraft to improve profitability. The fixed cost of operating a flight is spread over the larger number of passengers per flight. This is an example of Economy of Scale as defined by Besanko (Ref: Besanko, et al, 2010. Economics Of Strategy, 5th Edition, Wiley, 2010). The reduction of fixed costs has been made up of the following strategies: • Use of older leased aircraft in place of buying or leasing new aircraft.