如图所示竖直固定的测力计下端挂一个�轮组�轮组下端挂有物体b�轮组绳的末端通过定�轮沿水平方�与物体a相连.此时物体a在绳的水平拉力作用 Template




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Try and sketch some of theseCherry, Dutch oven, Corner, Sprinkler, Dessert, Robot, Hedge, Cabbage, Cards, Bunkhouse, view more ideas


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tomski如图所示竖直固定的测力计下端挂一个�轮组�轮组下端挂有物体b�轮组绳的末端通过定�轮沿水平方�与物体a相连.此时物体a在绳的水平拉力作用 coloring