All Flashcards
What are the differences between normal force at the top and bottom of a vertical loop?
Top: Fn and Fg point in the same direction. Bottom: Fn and Fg point in opposite directions.
Compare the net force at the top and bottom of a vertical loop.
Top: . Bottom: .
Compare centripetal and tangential acceleration in uniform circular motion.
Centripetal: Always present, directed towards the center. Tangential: Zero in uniform circular motion.
Compare the direction of gravitational force on Earth versus in a planet's orbit.
Earth: Always downwards. Orbit: Acts as the centripetal force, pointing toward the center of the orbit.
Differentiate between Method 1 (Point Mass) and Method 2 (Detailed) for drawing FBDs.
Method 1: Object represented as a dot, forces drawn from the dot. Method 2: Forces drawn at specific points where they are exerted on the object.
What is the effect of the net force pointing towards the center of the circle?
The object moves in a circular path.
What happens when the speed of an object in circular motion is doubled?
The centripetal force required to maintain the same radius is quadrupled.
What is the effect of gravity acting as the centripetal force for a planet's orbit?
The planet orbits the star (e.g., the sun).
What is the difference between tangential and centripetal acceleration in uniform circular motion?
Tangential acceleration: Change in tangential velocity (zero in uniform circular motion). Centripetal acceleration: Acceleration directed towards the center of the circle, causing the object to change direction.