All Flashcards
What is the effect of zero net force on an object?
The object maintains a constant velocity (either at rest or moving at a constant speed in a straight line).
What is the effect of unbalanced forces on an object?
The object accelerates (changes its velocity).
What happens when an object's mass increases?
Its inertia increases, making it harder to change its state of motion.
What happens if the reference frame is accelerating?
Newton's First Law does not directly apply; fictitious forces may be needed to explain motion.
What is Newton's First Law?
An object at rest stays at rest, and an object in motion stays in motion with the same velocity, unless a net force acts on it.
What is inertia?
Inertia is an object's resistance to change in its state of motion.
What is translational equilibrium?
Translational equilibrium occurs when the vector sum of all forces acting on an object equals zero, resulting in no net force and no acceleration.
What is static equilibrium?
Static equilibrium is when an object is at rest and the net force acting on it is zero.
What is dynamic equilibrium?
Dynamic equilibrium is when an object is moving at a constant velocity and the net force acting on it is zero.
What is an inertial reference frame?
An inertial reference frame is one in which Newton's first law holds true; it is a non-accelerating frame.
How do you calculate net force?
- Identify all forces acting on the object.
- Resolve forces into x and y components (if necessary).
- Add the force vectors, considering both magnitude and direction, to find the resultant force.
How do you determine if an object is in translational equilibrium?
- Identify all forces acting on the object.
- Calculate the vector sum of all forces.
- If the vector sum is zero, the object is in translational equilibrium.