6. Circular motion and gravitation Flashcards
1
Q
Define uniform circular motion
A
Motion in a circle of constant radius at constant speed
2
Q
Define angular displacement
A
The angle through which the object moves
3
Q
Define angular speed
A
The rate of change of angular displacement
4
Q
Define centripetal force
A
The net force acting on an object experiencing centripetal acceleration
5
Q
State Newton’s Law of Universal Gravitation
A
Every particle in the universe attracts every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them
6
Q
Define Gravitational Field Strength at a point
A
The force per unit mass exerted on a test mass placed at that point
