The force acting on the book when it is resting on a table is the gravitational force pulling the book downwards. This force is equal in magnitude and opposite in direction to the normal force exerted by the table on the book, keeping it in equilibrium.
As long as the book's velocity changes, there is a net forces acting on it - in other words, the forces are unbalanced. By the way ... How exactly does a book that is resting on a table slow down and come to a stop ?
The book remains on the table due to gravity and the normal force exerted by the table upward, balancing the downward force of gravity acting on the book. As long as these forces are balanced, the book will remain at rest on the table.
The book remains on the table due to the force of gravity pulling it down and the normal force exerted by the table pushing it up. These two forces are balanced, creating equilibrium and preventing the book from falling.
The normal force acts perpendicular to the surface of the book and balances the weight of the book when it is resting on a table. This force arises from the interaction between the book and the table, supporting the book and preventing it from falling through the table.
When a book is pushed across a table, there are two forces acting on it: the force applied by the person pushing the book (force of push) and the force of friction acting in the opposite direction on the book due to contact with the table surface.
For example, if the book is resting on a table, gravity pulls the book down, and the table pushes the book up.
As long as the book's velocity changes, there is a net forces acting on it - in other words, the forces are unbalanced. By the way ... How exactly does a book that is resting on a table slow down and come to a stop ?
The book remains on the table due to gravity and the normal force exerted by the table upward, balancing the downward force of gravity acting on the book. As long as these forces are balanced, the book will remain at rest on the table.
The book remains on the table due to the force of gravity pulling it down and the normal force exerted by the table pushing it up. These two forces are balanced, creating equilibrium and preventing the book from falling.
The normal force acts perpendicular to the surface of the book and balances the weight of the book when it is resting on a table. This force arises from the interaction between the book and the table, supporting the book and preventing it from falling through the table.
When a book is pushed across a table, there are two forces acting on it: the force applied by the person pushing the book (force of push) and the force of friction acting in the opposite direction on the book due to contact with the table surface.
The book will not fall to the ground because of the force of gravity pulling it down and the normal force exerted by the table pushing it up. These two forces are equal and opposite, resulting in a balanced system where the book remains stationary.
An example of non-concurrent forces would be a book resting on a table where the weight of the book is acting vertically downward and the normal force from the table is acting vertically upward in the opposite direction. Another example is a car driving on a curved road where the centripetal force required for circular motion is acting horizontally inward, while the frictional force between the tires and the road is acting horizontally outward.
An example of unbalanced forces acting on a static object would be a book resting on a table with someone pushing down on one side of the book. The table provides an upward force equal to the book's weight, but the force from the person's hand creates a net force that causes the book to move or tilt.
Because the table is exerting an upward force on the book exactly equal and opposite to the force of gravity.
Take the example of a book resting on a table. The downward force of the book's weight is matched exactly by the upward resistance of the table - hence the book remains where it is. (If the table was very flimsy, and unable to support the weight of the book, the book would accelerate towards the ground.)
An example of balanced forces acting on a static object is when a book is placed on a table. The force of gravity pulling the book downward is balanced by the normal force exerted by the table, keeping the book in place.