τ = dL/dt
The Attempt at a Solution
I understand the initial and final angular momentum vectors in the diagram, and the answer seems to make sense.
But when I initially solved it my logic was that since the axle itself is rotating clockwise, then the torque vector causing that would point in to the page due to the right hand rule - why is this reasoning wrong?
To be honest I've never used τ = dL/dt before, it's on our formula sheet but I don't remember learning it
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