Unit 3 - Circular Motion & Gravitation (6-8%) Flashcards
The only vector field covered in AP Physics 1 is ____. This field is the same ____.
gravitational field, anywhere near Earth
gravitational field unit/amount:
10 N/kilogram
fundamental forces:
(name all 4)
the most basic forces found in nature (gravity, weak, electromagnetic, and strong)
non fundamental forces:
forces that can be explained in terms of fundamental forces (like friction)
Infinite Fundamental Forces:
forces with infinite range (can act on very large distances of space, gravitational and electromagnetic)
Gravitational force:
weakest of fundamental forces, all object with mass (so all objects) exert it, it’s just very small for most things
2 Things that make gravitational forces stronger (and vice versa):
closer distance between objects, bigger objects
Force of gravity is directly proportional to objects’ ___.
mass (double one object, gravity doubles, double both objects’ mass, gravity QUADRUPLES)
Force of gravity is indirectly proportional to objects’ ___.
distance between each other
(the inverse SQUARED, i.e. if distance doubles, force is 1/4 original amount)
r in the gravitation between two objects equation means:
distance between both objects, NOT the radius
What is g really (in things like Fg = mg)?
A gravitational field that causes a gravitational force of mg to be exerted on any object in the field
Fg = mg in words:
when placed in gravitational field g, mass m will experience a gravitational force of mg.
As your get farther from Earth, the gravitational field vectors ___.
are not equidistant apart, but all same direction (towards Earth)
g depends on the mass ____, but not on ____.
the mass of the planet, mass of the object in the gravitational field
acceleration in circular motion is ___.
toward the center of the circular path
NOTE: so is the net force
