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Engineering

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Mechanical Engineering

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Force Vectors

Resolving Forces in 3D Coordinates

Description

Three-dimensional force systems involve forces acting in three different directions at the same time. These problems are common in physics and engineering. They are used to find the resultant force, which helps predict or analyze how an object or structure will behave.

The first step is to resolv...

Transcript

考虑一个通过眼螺栓固定在地面上的帐篷,受到三个力的作用。

建立一个笛卡尔坐标系,原点位于吊环螺栓处。力 F1 作用于二维 x-y 平面内,而力 F2 作用于三维空间中。力 F3  沿负 x 轴方向。

力 F1xy 分量的大小可通过勾股数组求得。利用所得到的大小,可将 F1 表示为笛卡尔形式。

同理,F2 可分解为垂直和水平分量。进一步分解水平分量后,F2 可用沿三个坐标轴的 i、j 和 k 单...