Force Freebody Diagrams Steps to Solving the Problem
Force Free-body Diagrams Steps to Solving the Problem Drawings Calculations 1
Force Free-body Diagrams Using a free-body diagram… 1. Draw a picture of the problem. 2. Draw the object on which the force is being sought. 3. Draw and label the forces and the acceleration. 4. Choose and draw your axes. 5. Determine the magnitude of the known forces and the acceleration if it is known. 6. Determine the angle of all of the forces and the acceleration (from the x-axis going counterclockwise). 7. Determine the components of each force and the acceleration. 8. Add the components of all of the forces. 9. Use Newton’s second law to solve the problem. 2
Force Free-body Diagrams An example… Bailey-the-Wonder-Dog is walking down a 20 o slope with a constant acceleration of 1 m/s 2. Bailey herself has a mass of 35 kg. What is the coefficient of friction acting between each of Bailey’s legs and the slope? 3
Force Free-body Diagrams θ 4
Force Free-body Diagrams θ 5
Force Free-body Diagrams θ y y x x 6
Force Free-body Diagrams θ θ y x 7
Force Free-body Diagrams Weight y x 8
Force Free-body Diagrams Normal Force y x 9
Force Free-body Diagrams Friction y x 10
Force Free-body Diagrams Acceleration y x 11
Force Free-body Diagrams 12
Force Free-body Diagrams 13
Force Free-body Diagrams 14
Force Free-body Diagrams 15
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