QuestionMay 5, 2026

2. A rope is thrown over a beam, and one end is tied to a 300 N bundle of lumber. You pull the free end of the rope 2 m with a force of 400 N to lift the lumber off the ground. How much work have you done? __

2. A rope is thrown over a beam, and one end is tied to a 300 N bundle of lumber. You pull the free end of the rope 2 m with a force of 400 N to lift the lumber off the ground. How much work have you done? __
2. A rope is thrown over a beam, and one end is tied to a 300 N bundle of lumber. You pull the free end of the rope 2 m with a force of 400 N to lift the lumber off the ground. How much work have you done? __

Solution
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Answer

800 J Explanation 1. Identify formula for work Work done is given by **W = F \cdot d**. Force and displacement must be in the same direction. 2. Apply given values F = 400 \text{ N}, d = 2 \text{ m}: W = 400 \times 2 = 800 \text{ J}

Explanation

1. Identify formula for work <br /> Work done is given by **$W = F \cdot d$**. Force and displacement must be in the same direction. <br /><br />2. Apply given values <br /> $F = 400 \text{ N}$, $d = 2 \text{ m}$: <br />$W = 400 \times 2 = 800 \text{ J}$
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