Recent content by TVP45

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    Do Mechanical Engineers Use AutoCAD?

    If you already know how to make drawings, and read them, you should be able to pick up 2D CAD in less than a hundred hours of practice, so a course wouldn't be worth it. If you need to learn about drawings, find a drafting tech school that offers evening "crash" courses for engineers. In almost...
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    Understanding the Relationship Between Wheel Rotation and Turning Difficulty

    It's much simpler if you look at a motorcycle to start. There, you must lean left to turn left. In a car, there's a whole bunch of stuff to consider. The car may be set up to understeer or oversteer for example. And, you have to look at the camber angle, etc, etc. Start with motorcycles.
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    Rigid Body Equilibrium Question

    Yes, I understand. Do you have the FBD solved at the upper right?
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    Physics Help: Calculating Force of Rope on Stuck Car | F1^2 = (h/2)^2 + l^2

    Draw a free body diagram for the apex of the rope.
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    Simple Physics question about rotational inertia

    (a) What is the formula for the volume of a sphere?
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    Calculating Torque on a Trap Door: Question and Equations

    Draw the door as a bar (no z dimension). Make a free body diagram. Use the hinge as a pivot.
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    Finding New Rate of Rotation for a Student on a Rotating Platform with Dumbbells

    I'd guess you're in a freshman physics class this semester, probably about Chapter 8, +/- 1 Chapter. So, what are you studying that looks anything like this? Skim through the text and look for a picture or diagram that suggests anything close to this.
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    How to machine a NPT internal thread?

    Oh, I didn't mean to suggest that was a good idea. I certainly would never try for anything tighter than +/- 0.25" if I could help it. I only know about the (roughly) 0.05" becuase I got assigned a job like that a few years back. My supervisor insisted he wanted an adapter put in with precision...
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    Energy apparently equals mass times the speed of light squared

    Hello, You are missing the point that "c" is the speed of light, but "300 000 000" is not. When you replace "c" with a number, that number includes a unit of measure (though that can be, for people who are very good in math, implied). There is no such thing as a speed of 186 000, or 1; there...
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    How to machine a NPT internal thread?

    The question is what you mean by precisely and whether you're doing a "one-off" or production. Pipe threads are interference fit (when done right and cold weld when not) and cannot be extremely precise. If you're doing one only, follow FredGarvin's gaging solution and make sure you have really...
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    Rigid Body Equilibrium Question

    OK. The diagram does not show a pivot where the strut meets the wall, but I assume that is supposed to be a pivot? In that case the strut is always in either pure tension or compression since you cannot transmit torque at either end. So, the force exerted on/by the strut at the upper right...
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    Angular velocity of a machine problem

    Do you know any equation that relates revolutions, angular velocity, angular acceleration, and time? Can you then show some work? Thanks.
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    Electric Field Strength- variations

    Can you describe this in a bit more detail?
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    Rigid Body Equilibrium Question

    Draw a free body diagram for each joint.
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    How to machine a NPT internal thread?

    I'm not real clear on what you're trying to do, but the basic control in pipe threading is length of engagement, and there are several ways to arrive at that. Are you trying to control depth of engagement in some precise way?
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