All Flashcards
What is the difference between internal and external forces?
Internal forces: Act within a system, do not affect COM motion. | External forces: Act on the system from outside, can change COM motion.
What is the difference between ideal and non-ideal strings?
Ideal strings: Negligible mass, do not stretch, uniform tension. | Non-ideal strings: Have mass, can stretch, non-uniform tension.
How do gravitational forces differ between AP Physics 1 and AP Physics 2?
AP Physics 1: Focuses on gravitational forces only. | AP Physics 2: Includes gravitational, electric, and magnetic forces.
What are the differences between internal and external forces?
Internal Forces: Act within the system, do not affect the center of mass motion. | External Forces: Act on the system from outside, do affect the center of mass motion.
Compare real and ideal strings.
Ideal Strings: Negligible mass, inelastic, constant tension. | Real Strings: Have mass, can stretch, tension may vary.
What is the effect of an external force on a system's center of mass?
It changes the motion of the center of mass.
What is the effect of the weight of a real string on the tension?
The weight causes the tension to vary along the length of the string.