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Is answer C right, if so, please explain?
1 Answer
- ?Lv 711 months agoFavorite Answer
With no friction at the wall or the floor, diagram d would be a good representation.
i.e. The forces X and Y are normals, i.e. act at right angles to the surfaces.
However, if a frictional force acts at the floor it will oppose motion, hence point towards the wall, preventing the ladder from moving away.
Combining the force Y acting ↑ and the friction acting →, we have a resultant acting ↗
Similarly, if a frictional force acts on the wall it will oppose motion, hence point up the wall, preventing the ladder from moving down the wall.
Combining the force X acting ← and the friction acting ↑, we have a resultant acting ↖.
Hence, diagram c shows this with X acting ↖ and Y acting ↗.
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