Question

State whether given statement is True or False.
When a book is placed on a horizontal surface, it is subject to two external forces: the force due to gravity i.e., its weight W acting downward, and the upward force on the book by the table, the normal force R.

• A. True
• B. False

Answer 1

The correct option is A True

Answer is A.

Force is defined as a vector quantity that tends to produce an acceleration of a body in the direction of its application. Changing the body's velocity causes the body to accelerate. Therefore, force can be mathematically defined as given by Newton's second law of motion. That is, F=ma, where,
F - force on the object
m - mass of the object
a - acceleration of the object.
Force is characterized by its point of application, its magnitude, and its direction.
Two or more forces may act upon an object without affecting its state of motion. For example, a book resting upon a table has a downward force acting on it caused by gravity and an upward force exerted on it from the table top. These two forces cancel and the net force of the book is zero.
Hence, the statement is true.