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Find it ...............​
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Find it ...............​

Find it ...............​-example-1
User Praveer Kumar
by
5.1k points

1 Answer

3 votes

Answer:

9 N

Step-by-step explanation:

Treat X and y as a single book with weight 9 N.

Draw a free body diagram of this book combination. There are two forces: weight force 9 N pulling down, and normal force F pushing up.

Sum of forces in the y direction:

∑F = ma

F − 9 N = 0

F = 9 N

User Weihuang Wong
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4.2k points
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