A block with 500g is hanging from the ceiling.There is also a string that is pulling the block towards one wall forcing the string that is attached to the block and ceiling to from an angle 70 degree withe respect to the ceiling.what is the tension in both strings?
问题描述：
A block with 500g is hanging from the ceiling.There is also a string that is pulling the block towards one wall forcing the string that is attached to the block and ceiling to from an angle 70 degree withe respect to the ceiling.what is the tension in both strings?
答
中文我就不翻译了.
简单的静力学：
T1 = mg/sin70 = 0.5*9.8/0.94 = 5.2N
T2 = mg ctg70 = 0.5*9.8*0.364 =1.78N
其中T1是挂在房顶的那个.
T2是横向拉的那个