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A 120 kg box is pulled by the forces shown in FIGURE Q1. The kinetic friction, μk between the box and the surface is 0.3 and it moves from a resting position. FIGURE Q1 a. Construct the free-body diagram and kinetic diagram for the box. [4 marks] b. Determine the required distance for the box to attain a speed of 9 m/s, using the principle of work and energy. [8 marks] c. Given that the horizontal surface is smooth, determine the required distance for the box to attain a speed of 14 m/s using the principle of work and energy, and explain the changes in part (b). [8 marks]

A 120 kg box is pulled by the forces shown in FIGURE Q1. The kinetic friction, μk between the box and the surface is 0.3 and it moves from a resting position. FIGURE Q1 a. Construct the free-body diagram and kinetic diagram for the box. [4 marks] b. Determine the required distance for the box to attain a speed of 9 m/s, using the principle of work and energy. [8 marks] c. Given that the horizontal surface is smooth, determine the required distance for the box to attain a speed of 14 m/s using the principle of work and energy, and explain the changes in part (b). [8 marks]

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  1. A 120 k g box is pulled by the forces shown in FIGURE Q1. The kinetic friction, μ k between the box and the surface is 0.3 and it moves from a resting position. FIGURE Q1 a. Construct the free-body diagram and kinetic diagram for the box. [4 marks] b. Determine the required distance for the box to attain a speed of 9 m / s , using the principle of work and energy. [8 marks] c. Given that the horizontal surface is smooth, determine the required distance for the box to attain a speed of 14 m / s using the principle of work and energy, and explain the changes in part (b). [8 marks]

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