Lecture 6A16-Physics.pdf - Lecture 6 Freebody diagram...

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Lecture 6
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Freebody diagram Applying Newton’s Laws Topics
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Introduction We’ll extend the problem solving skills we began to develop in Chapter 4. We’ll start with equilibrium, in which a body is at rest or moving with constant velocity. Next, we’ll study objects that are not in equilibrium and deal with the relationship between forces and motion.
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To use Newton’s first law for bodies in equilibrium To use Newton’s second law for accelerating bodies Goals
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Freebody diagram A freebody diagram (FBD) is a sketch showing all the forces acting on an object. Draw a FBD for a block : at rest on a horizontal surface sliding to a stop being pushed on a rough, horizontal surface being pushed on a horizontal surface at a constant velocity. block at rest on an incline
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Two common freebody diagram errors The normal force must be perpendicular to the surface. There is no m a force.”
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A car engine is suspended from a chain linked at O to two other chains.
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