Question

5. Action and reaction forces act on different bodies. Then how does a book rest of table?​

Answer 1

Answer:

It is that, when mass is placed on the table, mass exerts force of mg downwards on the table (action) and table exerts normal force R upwards on the body (reaction) which are equal and opposite so cancels each other making body to be at rest. Thus, action and reaction acts on different bodies.

Answer 2

Answer:

actually book exerts it's weight to the table in downward direction and at the same time , the table exerts a force on book in upward direction known as normal reaction . these two forces are acting on different bodies.