QQuestionPhysics
QuestionPhysics
Determine the net force using the given equations: f net = fa + ff or f net = fa − ff
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Answer
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Step 1:: First, we need to understand the problem.
In this case, we have two forces: $f_a$, the applied force, and $f_f$, the frictional force.
The net force is the sum of all individual forces acting on an object.
Step 2:: Examine the two equations provided: $f_{net} = f_a + f_f$ and $f_{net} = f_a - f_f$.
We need more information to determine which equation to use, as the relationship between the forces is not given. In general, the applied force can be either in the same direction or opposite to the frictional force.
Step 3:: If the applied force ($f_a$) and the frictional force ($f_f$) are in the same direction, we use the first equation: $f_{net} = f_a + f_f$.
This is because the forces add up when they act in the same direction.
Step 4:: If the applied force ($f_a$) and the frictional force ($f_f$) are in opposite directions, we use the second equation: $f_{net} = f_a - f_f$.
This is because the forces subtract when they act in opposite directions.
Step 5:: Since the relationship between the forces is not given, we cannot definitively determine the net force.
f_{net} = f_a - f_f
However, we can express the net force in terms of the applied force and the frictional force using both equations: or
Final Answer
The net force is either $f_{net} = f_a + f_f$ or $f_{net} = f_a - f_f$, depending on the relationship between the applied force and the frictional force.
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