Physics

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Sense I'm not taking Physics C but Physics B I guess I'm not expected to find the value of the drag force sense that would involve soem calculus. I just have a question though. If we performed a lab outside wouldn't the drag force vary from time to time sense the wind could increase or decrease???

  • Physics -

    Yes, strictly speaking. However, if you are doing a vertical drop test, winds will be mainly horizontal and will not have a large effect on the drag force in the vertical direction.

    You can make pretty good estimates of drag from vertical drop tests, without using calculus.

  • to drwls -

    and how would I do that?

    Can i find it without calculus in other situations?

  • Physics -

    For small velocities, you can model it as

    DragForce=K*Area*v^2

    where K is a constant, Area is the frontal area of the body, and v is velocity. This relationship is pretty good for small velocities, similar to those you would experience in a lab.

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