8 thoughts on “Homework H3.G - Fa22”

  1. Does anyone else sometimes decide to isolate for the velocity and acceleration of a single segment of a dependent/relative system in order to try to understand how its moving before trying to relate that the the observer? I feel like it helps me conceptually understand better, but it takes longer.

    1. You are correct. The nomenclature here is not very clear. You are asked to find the total angular velocity of the disk. omega_disk is a component of the angular velocity of the disk relative to the arm.

  2. I think there might be a mistake in the solution video around 10:30. You say k x i is -j, making the sign of r*w_d^2 positive, but isn't k x i equal to j, keeping the term negative?

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