Videos tagged py105
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PY105 pre-class video for session 35 - Fluids 2, density and pressure
This video is the second of three videos on fluids. In this one, we cover various topics. We start by stating Archimedes' principle, which leads to a discussion of density. From there, we go on to talk about pressure. We'll see how pressure changes [...]with depth in a static fluid, and then we'll bring things full circle, looking at the connection between fluid pressure and the buoyant force.
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PY105 pre-class video for session 6 - free-body diagrams
This video covers free-body diagrams. A free-body diagram is a diagram showing all the forces applied to an object, or a system of objects, in a particular situation. We go over how to draw free-body diagrams, and then how to use a free-body diagram [...]to help apply Newton's second law.
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PY105 pre-class video for session 4 - acceleration
This video focuses on the idea of acceleration. It includes equations that are applied to situations in which the acceleration is constant, and looks at free fall, which is a common example of one-dimensional motion with constant acceleration. Also [...]covered is the use of graphs in a constant-acceleration situation.
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PY105 pre-class video for session 2 - vectors + 1-D motion
This video covers the concepts of vector components and vector addition, as well as the concepts of displacement and distance.
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Heat Engines
In this video, we discuss the Carnot cycle for a heat engine. An engine using the Carnot cycle is reversible, so the Carnot cycle results in the highest possible efficiency for an engine operating between a particular pair of high and low [...]temperatures.
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Forces - an introduction
In this video, we define force, and then go on to discuss three forces in particular, the force of gravity, the force of tension, and the normal force.
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Connecting force and motion
In this video, we discuss the connection between force and motion, talking about Newton's second law as well as Newton's first law, and its implications.
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Forces - an introduction
In this video, we define force, and then go on to discuss three forces in particular, the force of gravity, the force of tension, and the normal force.
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PY105 pre-class video for session 23 - rotational kinematics
In this video, we introduce rotational kinematics. In other words, we start talking about how we describe the motion of rotating objects. One of the themes of the video is the introduction of a new set of variables - we'll talk about why we need [...]these variables, and how they're connected to the one-dimensional motion variables we're already familiar with. Another big theme of the video is the parallels that exist between one-dimensional straight-line motion and rotational motion, including the fact that the equations we use for rotation have exactly the same form as the equations we used for one-dimensional motion with constant acceleration.
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