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A 20 Kg-Book Is at Rest on the Horizontal Floor

Question 38

Multiple Choice

A 2.0 kg-book is at rest on the horizontal floor. You are applying a 10 N downward force, on the book, at an angle of 30 o from the vertical. The normal force on the book exerted by the floor is


A) 5.0 N.
B) 10 N.
C) 25 N.
D) 28 N.
E) 30 N.

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