Question

a book placed on the surface of a table. The
book is pused in one direction Draw the forces
acting on the book and explain.​

Answer 1

Answer:

Explanation:

When you place a book on a table, the book exerts a downward force on the table and the table exerts an upward force on the book.

F→Book on Table=mBook⋅g→  

and

F→Table on Book=mTable⋅a→  

where  a→  is the total acceleration from the expanding molecular bonds in the table. Let's call the  F→Table on Book  an "expansion force.”

The downward force compresses all the molecular bonds of the table while the bonds want to expand to maintain its state of being a table.

F→Book on Table=−F→ Table on Book  

This upward "expansion force" exerted by the table is of equal and opposite magnitude from the downward force and acts on the bottom surface of the book. Subtracting to take some dimensional analysis, we can combine combine our units and see the result of the acceleration.

mTable⋅a→+mBook⋅g→=0  

where

MC=mTable+mBook  

MC⋅(a→+g→)=0  

The "expansion force" is the normal force, acts perpendicular to the surface, and is an important result of newton's third law.