2 thoughts on “Homework H4.B - Fa22”

  1. In the top view, e_t points tangent to the path (same direction as the velocity v), and e_n points to the left (toward the center of the path).

    In the front view, e_t points into the page, and e_n points to the left. The third direction (perpendicular to the e_t/e_n plane) can be chosen upward, say "j".

    The most useful FBD for you will be one shown from the front view. You will have mg in the -j direction, the normal contact force having both j and e_n components, the tension force having both j and e_n components, and friction in the -e_t direction.

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