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1.當物體在斜面處於靜止狀態時,物體受到重力、支持力、靜摩擦力; 2.當物體在斜面處於下滑狀態時,物體受到重力、支持力、滑動摩擦力;3.如果物體為球形或圓筒形狀,則為滾動摩擦力,但初中階段一般很少出現; 4.如果忽...
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