The force from your desk on an object placed on it is equal in magnitude and opposite in direction to the force that the object exerts on the desk due to Newton's third law of motion.
No, an unbalanced desk is not an example of an unbalanced force. An unbalanced force refers to a force that causes motion or a change in motion, while an unbalanced desk is simply an object that is not level.
Friction between the desk and the floor acts as an unbalanced force to stop the desk from sliding. As the desk moves, the force of friction opposes the direction of its motion, eventually bringing it to a stop.
A pencil getting knocked off the desk is an unbalanced force. The force of the object hitting the pencil is greater than the force of gravity keeping it on the desk, causing it to fall.
The normal force acting on a book sitting on a desk is equal in magnitude and opposite in direction to the force of gravity pulling the book downward. This force prevents the book from falling through the desk and is what keeps the book in place.
If you push with a force of 100 N on a desk that does not move, no work is done because work is defined as the product of force and displacement in the direction of the force. Since the desk does not move, there is no displacement in the direction of the force, and thus no work is done.
No, an unbalanced desk is not an example of an unbalanced force. An unbalanced force refers to a force that causes motion or a change in motion, while an unbalanced desk is simply an object that is not level.
Friction between the desk and the floor acts as an unbalanced force to stop the desk from sliding. As the desk moves, the force of friction opposes the direction of its motion, eventually bringing it to a stop.
A pencil getting knocked off the desk is an unbalanced force. The force of the object hitting the pencil is greater than the force of gravity keeping it on the desk, causing it to fall.
The normal force acting on a book sitting on a desk is equal in magnitude and opposite in direction to the force of gravity pulling the book downward. This force prevents the book from falling through the desk and is what keeps the book in place.
If you push with a force of 100 N on a desk that does not move, no work is done because work is defined as the product of force and displacement in the direction of the force. Since the desk does not move, there is no displacement in the direction of the force, and thus no work is done.
Gravity
Gravity.
No, if the force exerted in one direction is greater than the force exerted in the opposite direction, the desk will move in the direction with the greater force, in this case to the left. The desk will move in the direction of the net force acting on it, which is the difference between the two forces (15 N to the left - 10 N to the right = 5 N to the left).
The force of your pencil or pen against the desk that your paper is on if you're writing something down. The force of your paper against the desk. The force of your book against the desk. In each case, the desk exerts the identical but opposite force against the object lying on it. If that were not true, the objects would deform the desk, or the desk would form a bump where the objects are lying on it.
The force needed to move a pencil across a desk would depend on the friction between the pencil and the desk surface. If there is low friction, only a small force would be needed. If there is high friction, a greater force would be required to overcome it.
The force that allows you to pull out a desk drawer is friction. This force is generated between the surfaces of the drawer and its tracks or slides, providing the resistance needed to move the drawer in and out.
The gravitational force between the Earth and the book pulls the book downward, while the normal force from the desk pushes the book upward. These two forces balance each other out, keeping the book at rest on the desk.