When I slowly pulled the cardboard, the coin placed on top of the cardboard remained at rest but was dragged along with cardboard. Explanation: That is because, the coin was dragged by the force in the surface of the cardboard called friction.
When you slowly pull the cardboard with a coin on it, the friction between the cardboard and the coin keeps the coin in place initially. As you increase the pulling force, the frictional force is eventually overcome, causing the coin to slide off the cardboard. The gradual pulling allows for a clearer observation of the transition between static and kinetic friction. If the pull is too quick, the coin may not have enough time to respond, potentially leading to a different outcome.
Consult the rules.
When the cardboard is at rest, the magnitudes of the pair of forces acting on it are equal. These forces form an action-reaction pair, with one force pushing or pulling in one direction, and the other force of equal magnitude pushing or pulling in the opposite direction.
As you slowly pull the cardboard, the friction between the cardboard and your hand creates a force in the opposite direction of the pull. This force resists the motion of the cardboard and causes it to move gradually. Additionally, the adhesive properties of any glue or tape on the cardboard may also affect the ease of pulling.
When the cardboard is at rest, the magnitudes of the two forces acting on it (gravity pulling down and normal force pushing up) are equal in magnitude and opposite in direction to maintain equilibrium. This means the net force acting on the cardboard is zero.
When you slowly pull cardboard, it begins to deform due to the tension applied to it. This tension causes the fibers in the cardboard to stretch and may lead to bending or curling at the edges. If the force exceeds the cardboard's tensile strength, it can tear or break. The rate of pulling can also affect how the material reacts, with slower pulls often resulting in more gradual deformations compared to sudden pulls.
To test the strength of cardboard, you can conduct a compression test by applying pressure to the material until it deforms or breaks, measuring the force required. Alternatively, a bursting test can be performed by applying a controlled force to a specified area until the cardboard ruptures, allowing for the assessment of its bursting strength. Additionally, you can evaluate the cardboard's tensile strength by cutting strips and pulling them apart to determine the force at which they fail. Each method provides insight into different aspects of the cardboard's durability and structural integrity.
when you heat an object up what happene to the atomsmolecules that it is made of?
A lot. http://en.wikipedia.org/wiki/2002 http://www.google.com/press/zeitgeist2002.html
What happene? What is the question? Why didn’t you ask?
A cardboard baler is designed to compress cardboard just as a haybaler does to hay. It can be used for cardboard that is being recycled or for cardboard that needs to be transported.
You would call strong cardboard 'cardboard'. It doesn't matter how strong it is, the cardboard is still cardboard. Even if the cardboard is extremely stiff, it is still cardboard, and there is no special name for it.