A book is lying on the table. What is the angle between the action of the book on the table and weight of the book:
A
0∘
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B
45∘
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C
90∘
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D
180∘
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Solution
The correct option is A0∘ The weight (W) and the action (A) both will act in same direction and parallel to each other. So the angle between them should be zero.