1- you push a coin across a tabble, the coin stops. How does this motion relate to balanced and unbalanced forces?
It is balanced if it completely stops. That is called deceleration. While an unbalanced force makes it move. So the friction is actually what makes it stop.
An unbalanced force will result in acceleration of deceleration. That is what happens in your example.
When you push a coin across a table and it eventually comes to a stop, the motion of the coin is influenced by both balanced and unbalanced forces. Let's break it down step-by-step:
1. Initial Push: When you push the coin, you apply a force on it in a particular direction. This force is unbalanced because it acts on the coin alone, without any opposing forces at first. As a result, the unbalanced force causes the coin to start moving.
2. Friction: As the coin slides across the table, it encounters a force known as friction. Friction acts in the opposite direction to the motion of the coin and opposes its movement. This force is balanced because it acts in response to the push you applied, countering the unbalanced force that initially set the coin in motion.
3. Decreasing Force: As the coin continues to move, the force of friction gradually decreases the coin's speed. This decrease occurs because the frictional force opposes the motion and acts to slow it down. Initially, the frictional force is greater than the force you applied, resulting in a deceleration of the coin. Eventually, the force of friction becomes equal to the force you originally exerted, leading to a balanced situation with no net force.
4. Stopping: Once the force of friction becomes equal to the force exerted by your push, the forces acting on the coin are balanced. At this point, the net force becomes zero, causing the coin to come to a stop and preventing further motion. The balanced forces ensure that the coin remains stationary until another external force is applied.
In summary, the motion of the coin in this scenario involves unbalanced forces during the initial push, which sets it in motion. As the coin moves, the force of friction acts as a balanced force, gradually slowing it down until it finally stops.
The motion of the coin stopping after you push it across a table can be explained in terms of balanced and unbalanced forces.
Balanced forces occur when the forces acting on an object are equal in magnitude and opposite in direction. In this case, when you push the coin, there is friction between the coin and the table surface. The force you apply on the coin in one direction is balanced by the friction force acting in the opposite direction.
However, in order for the coin to stop, there must be an unbalanced force acting upon it. An unbalanced force occurs when the forces acting on an object are not equal, causing a change in its motion. In this situation, the unbalanced force that causes the coin to stop is primarily the force of friction between the coin and the table surface. As the coin moves, the force of friction opposes its motion until it eventually brings the coin to a halt.
To test this, you can perform a simple experiment. Push a coin gently across a table and observe what happens. Note that the coin eventually stops due to the force of friction acting against its motion. Alternatively, you can vary the level of force applied to the coin and observe how it affects the distance the coin travels before coming to a stop. This will demonstrate the relationship between the applied force, the force of friction, and the resulting motion of the coin.
By understanding and applying the concepts of balanced and unbalanced forces, you can analyze and explain various motions, like the stopping of a coin on a table.