Videos tagged py105
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PY105 pre-class video for session 11 - a box on a ramp
In this movie, we'll just look at a box on a ramp. First, we'll go over how to draw the free-body diagram for a box that remains at rest on ramp, including talking about the coordinate system we usually use, and how to split the various forces into [...]components. Then, we'll go from there to applying Newton's second law to analyze the situation.
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PY105 pre-class video for session 10 - friction
In this video, we discuss how we incorporate friction. We use a relatively simple model of friction, which, in some cases, can be much more complicated than our model can handle. Here, we talk about kinetic friction and static friction, as well as [...]about the effect that changing the contact area has on the friction force.
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PY105 pre-class video for session 9 - projectile motion
This video covers the basics about projectile motion. In particular, we discuss what determines the maximum height reached by a projectile, what determines the time a projectile spends in the air, and what determines the range (the horizontal [...]distance traveled) of the projectile.
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PY105 pre-class video for session 8 - the independence of x and y
In this video, we discuss a very powerful idea, that motion in two dimensions can often be reduced to two independent one-dimensional motions. For example, in the absence of air resistance, the parabolic trajectory of a baseball can be separated into [...]its horizontal and vertical components, with those components being analyzed separately.
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PY105 pre-class video for session 7 - relative velocity
In this video, we cover the concept of relative velocity, which deals with objects that are moving with respect to one another, and/or moving with respect to an observer. A common example is what happens when you're driving in your car, when other [...]vehicles, trees, bridges, etc. are moving with respect to you. We first cover relative velocity in one dimension, and then extend what we learn to two dimensions.
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PY105 pre-class video for session 5 - an introduction to force
In this video, we go over force ideas. Three forces are discussed in particular - the force of gravity; the force of tension; and the normal force. We also talk about free-body diagrams for the first time. The video ends with a short discussion of [...]Newton's first and second laws of motion, which enable us to connect force to motion.
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PY105 pre-class video for session 3 - velocity and speed
This video deals with the topics of velocity and speed. It includes a discussion of average speed compared to average velocity; how to find instantaneous values of velocity and speed; and how velocity, speed, and displacement can be found from [...]different graphs.
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- 105 views
