H2P-520

Free-body diagrams and vector triangles

H2 Physics · JC 2 · Medium · Free-body diagrams and vector triangles

1. The three forces add vectorially to give zero resultant.
2. The magnitudes of $W$, $N$ and $F$ must all be equal.
3. $W$ and $N$ cancel, so $F$ must be zero.
4. Only the components of $W$ and $F$ along the slope must be equal; $N$ is irrelevant.

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