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In the context of types of forces and free-body diagrams, which statement best defines the net force on an object?
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6. Intro to Forces (Dynamics)
Types Of Forces & Free Body Diagrams
Scelta multipla
Which of the following is NOT a force acting on an object in a free-body diagram?
A
Mass
B
Normal force
C
Frictional force
D
Gravitational force (weight)
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Understand that a free-body diagram represents all the forces acting on an object, shown as vectors originating from the object's center.
Recall that forces are interactions that can cause an object to accelerate, such as gravitational force, normal force, frictional force, tension, applied force, etc.
Recognize that 'mass' is not a force; it is a measure of the amount of matter in an object and a scalar quantity, not a vector.
Identify that gravitational force (weight) is the force due to gravity acting on the object's mass, calculated as \(\text{Weight} = m \times g\), where \(m\) is mass and \(g\) is acceleration due to gravity.
Conclude that since mass is not a force, it should not appear as a force in a free-body diagram, unlike normal force, frictional force, and gravitational force.
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