what are the action and reaction forces on a stack of 3 books
When a stack of 3 books is placed on a table, there are two forces acting on the books: the action force and the reaction force.
1. Action Force: The action force is the force applied by the books on the table due to their weight. It is acting downwards and is equal to the weight of the books, which is determined by the mass of the books and the acceleration due to gravity.
2. Reaction Force: The reaction force is the equal and opposite force exerted by the table on the books. It acts upwards and counterbalances the action force to prevent the books from accelerating through the table.
According to Newton's third law of motion, for every action, there is an equal and opposite reaction. Therefore, the action force is the weight exerted by the books on the table, and the reaction force is the upward force exerted by the table on the books.
The action and reaction forces on a stack of 3 books can be explained by Newton's third law of motion, which states that for every action, there is an equal and opposite reaction.
1. Action Force: The force exerted by the bottom book due to the weight of the entire stack and the force of gravity acting on it. This force is directed downwards.
2. Reaction Force: According to Newton's third law, there will be an equal and opposite reaction force exerted by the surface supporting the stack of books. This force is directed upward.
So, the action force is the downward force exerted by the books, and the reaction force is the upward force exerted by the supporting surface.
To determine the action and reaction forces on a stack of three books, let's first understand Newton's third law of motion. According to this law, for every action, there is an equal and opposite reaction.
In this case, the action force refers to the force exerted by the books on each other. When you stack the books, the weight of the upper books applies a downward force on the lower books. This downward force is the action force.
On the other hand, the reaction force is the force exerted by the lower books on the upper books. It is equal in magnitude but opposite in direction to the action force. So, the reaction force is an upward force.
The action and reaction forces occur in pairs, meaning that if one book exerts a force on another book, the other book exerts an equal and opposite force on the first book.
In conclusion, for a stack of three books, the action force is the downward force applied by the upper books on the lower books, and the reaction force is the upward force exerted by the lower books on the upper books.