一道物理理解问答、计算题,英文版的,本人不大理解题目的意思,

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一道物理理解问答、计算题,英文版的,本人不大理解题目的意思,Figure below shows a uniform ruler of 120g is suspended at its midpoint from a spring balance which is calibrated in Newton(N).A triangular block is suspended from the metre rule at the 25cm mark.It is balanced by a 250g mass suspended from the 75cm mark.[Take g=10N/kg.](a)Calculate the mass of the triangular block.(b)Why the mass of the metre rule does not play a part in the calculation in (a)?(c)What is the reading on the spring balance?

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甜蜜的钢笔

傲娇的火

2026-03-30 13:45:45

下图表示一个120g的尺子被悬挂在一个校准牛顿的秤的中央。
一个三角悬挂在尺子25cm处,同时在尺子75cm处,一个250G的“重量”(在这里,重量为名词)和三角保持着平衡。[用g=10n/kg]
a 三角的重量为?
250
b 为什么尺子的重量并不干扰计算?
because the calculation involves only the triangular block and the 250g mass,the weight of the ruler doesn't interfere with the weight of the triangular block。
c 上面那个称会显示什么(如果比较三角和250这个重量的话)
0

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  • 安详的故事
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    2026-03-30 13:45:45

    下图表示一个120g的尺子被悬挂在一个校准牛顿的秤的中央。一个三角悬挂在尺子25cm处,同时在尺子75cm处,一个250G的“重量”(在这里,重量为名词)和三角保持着平衡。[用g=10n/kg]a 三角的重量为?250b 为什么尺子的重量并不干扰计算?because the calculation involves only the triangular block and the 250g mass,the weight of the ruler doesn't interfere with the weight of the triangular block。c 上面那个称会显示什么(如果比较三角和250这个重量的话) 0

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