Describe 2 contact and 2 non-contact force examples. Please and thank you very much. :)
skating on ice.
sliding friction of a chair across floor
two magnets repelling
a positive charge repelling another positive static charge.
Certainly!
Contact forces refer to forces that require physical contact between two objects for them to act on each other. Here are two examples of contact forces:
1. Friction: This force occurs when two objects rub against each other. For instance, when you slide a book across a table, the friction between the book and the table's surface slows down its motion.
2. Tension: This force is created when an object is pulled by a force applied at opposite ends. An example is a rope or a string being pulled from both ends.
On the other hand, non-contact forces are forces that act between objects without any physical contact. Here are two examples of non-contact forces:
1. Gravitational force: This force is responsible for the attraction between objects with mass. For example, the gravitational force between the Earth and the Moon keeps the Moon in orbit around the Earth.
2. Magnetic force: This force is observed between magnets or objects with magnetic properties. For instance, when two magnets are brought closer together, they either attract or repel each other depending on their polarity.
To identify contact and non-contact forces, you can analyze whether an object needs to be in direct physical contact with another for the force to occur. If they need contact, it's a contact force, and if they don't, it's a non-contact force.