Recent content by Worn_Out_Tools

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    Undergrad Question about Cartesian Tensors

    “a” is defined as shorthand for the cosine function earlier in the book. So 1 = cos(0,j) * cos (0,j)?
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    Undergrad Question about Cartesian Tensors

    I am not a mathematician but an Engineer-in-Training studying mechanics. That being said why does equation I-10 equal 1 when k equals i and 0 when k does not equal i?
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    [Statics] Determining the normal force at an internal point of a member

    I figured it out. Used a wrong number for the second method causing the answer to differ. Thank you nonetheless.
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    [Statics] Determining the normal force at an internal point of a member

    For this problem (see image), I get the correct answer for the normal force at point E if I: 1) divide the frame into members AB and CB, 2) solve for the x and y components of the reaction force at point B, 3) make a free body diagram with the cut at point E forming member EB and setting the sum...
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    Undergrad Using polar coordinates to describe rose petals

    Wait, I don’t understand, how’d you determine that?
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    Undergrad Using polar coordinates to describe rose petals

    I encountered a question which asked me to describe the rose petal sketched below in polar coordinates. The complete answer is R = {(r, θ): 0 ≤ r ≤ 6 cos(3θ), 0 ≤ θ ≤ π}. That makes sense to me for the right petal. What about the other two on the left?