✨ Best Answer ✨
物重：重力把物體往下壓的力
物重=重力
重力：地球把所有東西往地心吸的力
重力=萬有引力=地心引力
支撐力：東西放著不讓他往下掉的力（方向向上（抵銷物重
支撐力=物重
彈簧拉力…抱歉我也忘了
簡單來講大概是這樣
by113會考生
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