A book is lying on the table. What is the angle between the action of ...
Action Force and Reaction Force are in opposite directions.
So, the angle between them is 180º
View all questions of this test
A book is lying on the table. What is the angle between the action of ...
Because the action and reaction are acting in opposite directions , means both are antiparallel to each other.
A book is lying on the table. What is the angle between the action of ...
Angle between the action of the book on the table and reaction of table on the book
When a book is lying on the table, there are two forces acting on it - the weight of the book (downward) and the normal force exerted by the table (upward). According to Newton's third law of motion, these two forces are an action-reaction pair, meaning they are equal in magnitude and opposite in direction.
Understanding Newton's third law of motion
Newton's third law states that for every action, there is an equal and opposite reaction. This means that whenever an object exerts a force on another object, the second object exerts a force of equal magnitude but in the opposite direction on the first object.
In this case, the book exerts a downward force on the table due to its weight. Simultaneously, the table exerts an equal and opposite force on the book, known as the normal force. The normal force is the force exerted by a surface to support the weight of an object resting on it.
Angle between the action and reaction forces
The angle between the action of the book on the table (weight) and the reaction of the table on the book (normal force) is 180 degrees. This is because the weight force is acting vertically downwards, while the normal force is acting vertically upwards.
Since the two forces are opposite in direction, they form a straight line, resulting in an angle of 180 degrees between them. This angle can be visualized by drawing a straight line from the weight force to the normal force, passing through the center of the book.
Conclusion
The correct answer is option C, 180 degrees. The angle between the action of the book on the table (weight) and the reaction of the table on the book (normal force) is 180 degrees, as per Newton's third law of motion.
To make sure you are not studying endlessly, EduRev has designed Class 11 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 11.