PDF Publication Title:
Text from PDF Page: 056
Another example of Newton’s first law is a car trying to stop on ice. Once the car is moving in a certain direction and the brakes are applied, the car will not stop easily because of the minimal friction force between the tires and the ice. The car continues to move in its original horizon- tal direction because the unbalanced force of friction is small compared with the forward motion of the car. As a result, the car stays in motion. Drag Airspeed Lift Weight Thrust The first law of motion can also be observed in an aircraft in flight. The four major forces acting on an aircraft in flight are lift, drag, thrust, and weight. Considering an aircraft traveling at a constant altitude, the lift and weight can be neglected (they cancel one another out). For this example, the weight change due to the decrease in fuel is neglected. If an aircraft travels at a constant speed, thrust equals the drag. As a result, there is no net force on the plane and the plane continues to travel in a horizontal line. If, however, the engine produces any additional thrust, the plane’s motion will change. Example Problem: A Boeing 747 has a mass of 174,000 kg. What is the minimum lift force required to get it off the ground? Solution: The lift force must overcome the force due to the weight of the plane. The weight force is calculated as follows: W = mg W = (174,000 kg)(9.8 m/s2) W = 1,705,200 Newtons (N) Because the force due to the weight of the plane is 1,705,200 N in the downward direction, the lift force must be greater than 1,705,200 N in the upward direction to stay in the air. PROBLEMS 1. When an airplane is moving at a constant speed at a constant altitude, the sum of the forces acting on the airplane equal ________________. For questions 2 to 4, use the following information: A jet is flying at a constant height of 10,894 km with a constant speed of 1210 km/hr. This jet weights 109,000 kg. Assume gravity is 9.80 m/s2. 2. What is the force acting on the plane due to its weight (W = mg)? 3. How much lift force is being applied to the jet? 4. If the jet is providing a thrust of 104,525 N, what is the drag force applied to the jet? 5. If the drag of a plane is greater than the thrust generated by the engine, the plane will __________. 6. Use Newton’s first law of motion to explain why people should wear seatbelts. 48 Four forces. Newton’s First Law of MotionPDF Image | NASA Guide to Engines
PDF Search Title:
NASA Guide to EnginesOriginal File Name Searched:
nasa-guide-to-engines.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)