Problem Solving: Free-Body Diagrams and Newton's Laws your ' 1. Draw a 'sketch of the situation. I 2. Consider only one object (at a time). and draw a free-body diagram for that body, showing all the forces acting on that body. Do not show any forces that the body exerts on other bodies. It several bodies are involved, draw a free-body diagram for each body separately, showing all the forces acting on that body. 3. Newton's second law involves vectors, and it is usually important to resolve vectors into components. Choose an x and y axis in a way that simplifies the calculation. 4. For each body, Newton's second law can be applied to the x and y components separately. That is the x component of the net force on that body will be related to the x component of that body's acceleration: 2F; = max , and similarly for the ydirection. 5. Solve the equation or equations for the unknown(s). Apply these steps Use the steps outlined above to find the magnitude of the acceleration a of a chair and the magnitude of the normal force FN acting on the chair: Yuset pushes a chair of mass m = 45.0 kg across a carpeted oor with a force Fp (the subscript 'p' here is lowercase and throughout the question) of magnitude F = 170 N directed at 9 = 35.0 degrees below the horizontal (gure 1). The magnitude of the kinetic frictional force between the carpet and the chair IS Fk = 91.6 N . Imum Spy =FN FG F,,sin6=ma.,, ' Solve these equations to nd FN and a. When solvrng problems involving forces and Newton's laws. the following summary of things to do will start your . . mind thinking about getting involved in the problem at rlng ' hand. 7 Part E ghathis'ttvte magnitude of the acceleration a of the chair? What is the magnitude of the normal force FN acting on e c air > . Express your answers, separated by a comma, In meters per second squared and newton: to three significant figures. } View Available Hint(s) a 0 0 ? You have already submitted this answer. Enter a new answer. No credit lost Try again. \\ W Previous Answers muest Answer mm Next > 9 Pearson