The force represented by the arrow at A is the force of gravity .
What is force of gravity?
- The force of attraction between two objects having mass is called force of gravity.
How earth applies force of gravity on the object on it's surface ?
- Any object having a certain mass if put on the surface of earth , the earth exerts a force on that object I.e. the force of gravity.
- In the figure the object put on the wedge had certain mass thus in downward direction the force of gravity is applied by the earth.
Thus , we can conclude that the correct answer is option B.
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