Treat this as A ranking task. Rank the cases by how quickly they fall. So greate

Question

Treat this as A ranking task. Rank the cases by how quickly they fall. So greatest = the fastest drop, and the least = the slowest drop.

__ Case A.         A. 3rd greatest
__ Case D.         B. Greatest
__ Case B.         C. 2nd greatest
__ Case C.         D. 4th greatest

the more explanation the better, thanks!

Treat this as A ranking task. Rank the cases by how quickly they fall. So greatest = the fastest drop, and the least = the slowest drop. __ Case A. A. 3rd greatest __ Case D. B. Greatest __ Case B. C. 2nd greatest __ Case C. D. 4th greatest the more explanation the better, thanks!

Explanation / Answer

rods A and D reach bottom simultaneously as only their weight acts on them(no magnetic force on D as no current flow)

rods B and C also reach simultaneously but later than A or D because net downward force acting on B or C is less than their weight due to magnetic force upwards in rods B or C

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