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The calculation for work done is given as MB (cos θ₁ - cos θ₂) = MB (cos 0° - cos 60°) = MB [1 - 1/2] = 2 × 10⁴ × 6 × 10⁻⁴ / 2 = 6 J. What is the final result?

1. MB (cos θ₁ - cos θ₂)
2. MB (cos 0° - cos 60°)
3. MB [1 - 1/2]
4. 6 J

Correct answer: 6 J

Solution

The final result of the calculation is 6 J, which matches option D. The other options represent intermediate steps in the calculation.

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