A 2.0 kg-book is at rest on a 30^o inclined plane. The normal force acting on the book by the inclined plane is A) 2.0 N. B) 5.0 N. C) 10 N. D) 17 N. E) 20 N.

Question

Quizplus · Accepted Answer

The normal force is the component of the gravitational force perpendicular to the inclined plane. It is calculated as $ N = mg \cos(\theta) $. For a 2.0 kg book, $ N = 2.0 \times 9.8 \times \cos(30^\circ) \approx 17 $ N.

A 20 Kg-Book Is at Rest on a 30 o Inclined

A 20 Kg-Book Is at Rest on a 30^o Inclined