A book with a mass of 8 kg is at rest on a horizontal surface of a table, as shown below. The magnitude of the normal force acting on the book is -
A.8
B.40
C.80
D.100

N = 80 N

Explanation:

Given that,

Mass of a book, m = 8 kg

We need to find the magnitude of the normal force acting on the book. Normal force acting on an object is balanced by its weight such that,

N = mg

g is the acceleration due to gravity

So, the correct option is (c) "80 N".

the displacement produced by the body.  

the amount of force subjected to the body.  

the angle between the direction of force and displacement