Which of these weights is required to balance the scales, 90 kg, 128 kg or 160 k

游客2023-10-21 22

问题 Which of these weights is required to balance the scales, 90 kg, 128 kg or 160 kg?

选项

答案 128kg

解析根据杠杆平衡原理，动力×动力臂=阻力×阻力臂，用代数式表示为F×L1=W×L2，所以80×160=?×10，从而可得出结果。

转载请注明原文地址:https://tihaiku.com/zcyy/3116998.html

相关试题推荐

随机试题

最新回复(0)

Youarerequiredtowriteanemailofnofewerthan80wordstoyourmanager,ac