The relationship between safety factor of sand slope above water table and that of sand slope on sea bed is ( ). (When the slope sands have the same shearing resistance angle φ )
A.
The safety factor of sand slope above water table is bigger.
B.
The safety factor of sand slope on sea bed is bigger.
C.
The safety factors of both cases are equal.
D.
It's not certain.
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【简答题】在如下图所示的斜面上,有一重力 G 为 100
N 的小球。问:使小球沿斜面向下滑的力和垂直于斜面向下压的力各是多少?