All Flashcards
What is centripetal acceleration?
Acceleration directed towards the center of a circular path, constantly changing the object's direction.
Define tangential acceleration.
Acceleration along the circular path that changes an object's speed.
What is the period (T) in circular motion?
Time for one complete revolution, measured in seconds (s).
What is frequency (f) in circular motion?
Number of revolutions per unit time, measured in Hertz (Hz).
State Kepler's Third Law.
Relates a satellite's orbital period to its orbital radius and the mass of the central body.
Label the following diagram of Centripetal Acceleration.
1: Velocity (v), 2: Centripetal Acceleration (ac), 3: Center of Circle
Label the following diagram of Tangential Acceleration.
1: Velocity (v), 2: Tangential Acceleration (at), 3: Centripetal Acceleration (ac), 4: Center of Circle
Label the forces acting on the ball in the following diagram of a Conical Pendulum.
1: Tension (T), 2: Weight (mg)
What is the effect of centripetal acceleration on an object's velocity?
Changes the direction of the velocity but not its magnitude (speed).
What is the effect of tangential acceleration on an object's speed?
Increases or decreases the tangential speed of the object.
What force causes centripetal acceleration for satellites in circular orbits?
Gravity provides the centripetal force.
What happens to the orbital period of a satellite if its orbital radius increases, according to Kepler's Third Law?
The orbital period increases.
What happens when a car moves around a banked curve?
Static friction and the normal force combine to create the centripetal force, allowing the car to turn.