Forces Flashcards
How does distance affect the amount of gravitational force?
As distance increases, gravitational force decreases. As distance decreases, gravitational force increases.
What would need to happen in order to increase the amount of gravitational attraction between objects?
Either the mass of the object would need to increase, or the distance between the object would need to decreases.
What would need to happen in order to decrease the amount of gravitational attraction between two objects?
Either the mass of the object would need to decrease, or the distance between the objects would need to increase.
Explain the difference between weight and mass. Explain which would change if you went to a different planet.
Weight is a measure of gravitational pull on an object. Mass is a measure of the amount of matter in an object and would not change due to changes in gravitational pull. If I went to a different planet, my weight would change but not my matter or mass.
Explain the difference between contact and non-contact sources. Also, give an example of each.
Contact forces are pushes and pulls on one object by another that is touching it. Examples Friction
Non-contact forces are forces that one object can apply to another without actually touching it.
Examples Gravity
List 5 forces that we have studied
Friction, buoyant force, Gravity, centripetal force, applied, normal
List, define, and give an example of each four types of friction
Static friction-the friction that acts on objects that are not moving Ex: Books sitting on a table. Static the is between the book and the table.
Sliding friction- friction that occurs when one solid surface slides over another. Ex: Book sliding across a table. Friction is between book and the table.
Rolling friction- the friction that occurs when an object rolls over a surface. Ex:
How does mass effect the amount of gravitational attraction?
As mass increases, gravitational force increases. As mass decreases, gravitational force decreases
