Question:
A plank of length 2L leans against a vertical wall It starts
Last updated: 6/3/2023
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A plank of length 2L leans against a vertical wall It starts to slip downward without friction The top of the plank loses contact with the wall when it is at a height of of its initial height 4 B half of its initial height th C A D of its initial height of its initial height 21