Question: 3: External Force Required for Equilibrium A 20 kg box is resting on a 40 inclined plane, and the coefficient of kinetic friction is 0.2.

3: External Force Required for Equilibrium A 20 kg box is resting on a 40 inclined plane, and the coefficient of kinetic friction is 0.2. (a) If no external force is applied, calculate the acceleration of the box. (b) Now, using the simulation, apply an external force parallel to the incline just enough to keep the box at rest. (c) Determine the required force theoretically and compare it with the applied force in the simulation. (d) Explain why the applied force differs from the calculated force (consider friction behavior, force rounding in simulation, etc.). Hint: Use the equation: F_applied = mg sin() + Ff

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