Answer
a). A book is sitting on the table. The gravitational force is acting on it vertically downwards and an equal and opposite upward force acts on the block which is the reaction normal force.
There are (2) 2 forces acting on the book.
b). The weight and normal forces are action-reaction pair. The normal force is the reaction of the gravitational pull and vice-versa.
Work Step by Step
a). A book is sitting on the table. The gravitational force is acting on it vertically downwards and an equal and opposite upward force acts on the block which is the reaction normal force.
There are (2) 2 forces acting on the book.
b). The weight and normal forces are action-reaction pair. The normal force is the reaction of the gravitational pull and vice-versa.
