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What is the definition of center of mass?
The 'average' position of all the mass in the system.
What is acceleration?
The rate of change of velocity.
Define Newton's Second Law.
The relationship between force, mass, and acceleration: F = ma.
What is angular tension?
Tension in strings or ropes that are at an angle to the vertical or horizontal.
What is apparent weight?
How heavy an object *feels*, which can differ from its true weight (mg) due to acceleration.
In a free-body diagram for angular tension, what do the x and y components of the tension force represent?
The x-component represents the horizontal force exerted by the tension, and the y-component represents the vertical force exerted by the tension.
In an apparent weight diagram, what forces should be included?
Gravity (weight) and normal force.
What is the effect of upward acceleration on apparent weight?
Apparent weight increases (feel heavier).
What is the effect of downward acceleration on apparent weight?
Apparent weight decreases (feel lighter).
What happens to apparent weight during free fall?
Apparent weight becomes zero (feel weightless).
What is the effect of applying a force on an object with mass?
The object accelerates in the direction of the force (Newton's Second Law).