What is the value of 1 ft-lbf in joules?

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Multiple Choice

What is the value of 1 ft-lbf in joules?

Explanation:
Work is force times distance, so to express 1 ft-lbf in joules you convert both units to the SI system. A pound-force equals 4.4482216 newtons and a foot equals 0.3048 meters. Multiply them: 4.4482216 N × 0.3048 m ≈ 1.3558179 J. Therefore, 1 ft-lbf is about 1.3558 joules.

Work is force times distance, so to express 1 ft-lbf in joules you convert both units to the SI system. A pound-force equals 4.4482216 newtons and a foot equals 0.3048 meters. Multiply them: 4.4482216 N × 0.3048 m ≈ 1.3558179 J. Therefore, 1 ft-lbf is about 1.3558 joules.

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