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A car applies a force of 36.8 Newtons for a 668 -meter loop; what was the work done? (1 point) \( 24,600 \mathrm{~J} \) 705 J 18.2 J 0 J

Ask by Chadwick Hodgson. in the United States
Jan 24,2025

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Tutor-Verified Answer

Answer

The work done is approximately 24,600 J.

Solution

To find the work done by the car, we can use the formula for work: \[ W = F \cdot d \cdot \cos(\theta) \] where: - \( W \) is the work done, - \( F \) is the force applied, - \( d \) is the distance over which the force is applied, - \( \theta \) is the angle between the force and the direction of motion. In this case, since the force is applied in the direction of the motion (assuming the loop is horizontal), the angle \( \theta \) is \( 0^\circ \). Therefore, \( \cos(0^\circ) = 1 \). Given: - \( F = 36.8 \, \text{N} \) - \( d = 668 \, \text{m} \) Now we can calculate the work done: \[ W = 36.8 \, \text{N} \cdot 668 \, \text{m} \cdot \cos(0^\circ) \] Let's calculate this. Calculate the value by following steps: - step0: Calculate: \(36.8\times 668\times 1\) - step1: Rewrite the expression: \(36.8\times 668\) - step2: Multiply the numbers: \(24582.4\) The calculation gives us: \[ W = 36.8 \, \text{N} \cdot 668 \, \text{m} = 24582.4 \, \text{J} \] Rounding this to the nearest whole number, we find: \[ W \approx 24582 \, \text{J} \] Among the options provided, the closest answer is \( 24,600 \, \text{J} \). Thus, the work done by the car is approximately \( 24,600 \, \text{J} \).

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Bonus Knowledge

To calculate the work done, we use the formula \( \text{Work} = \text{Force} \times \text{Displacement} \). Here, the force applied is 36.8 Newtons, and the displacement is 668 meters. So, \( \text{Work} = 36.8 \, \text{N} \times 668 \, \text{m} = 24,600.4 \, \text{J} \). Therefore, the work done is approximately \( 24,600 \mathrm{~J} \). Now you know that work is all about the force applied over a distance, transforming energy in an exciting way! Whether it's moving a car or lifting an object, it's all about that push in the right direction! As you tackle physics problems, always check if the force and displacement are in the same direction. If they're not, you might just end up calculating zero work done—don't let that happen!

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Physics Ethiopia Jan 24, 2025

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