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Why is correction needed even if the object is light but repeated bending is required?

Answer and explanation

Correct answer: Repetition can strain the back

Direct answer: B, repetition can strain the back. Safety does not depend only on whether one object is heavy. Repeated bending makes the back muscles and joints work again and again; even a light object can therefore cause tiredness, discomfort, or strain, especially with poor posture and too few breaks. A is wrong because a light object is not automatically safe. C is wrong because repetition does not make the work disappear. D is wrong because bending does not literally remove productivity; the concern is physical risk and inefficient posture. A better arrangement could raise the object, use a suitable work height, reduce repetitions, or allow recovery breaks. Exam cue: judge weight, posture, force, duration, and repetition together.

Related tags

Home-ScienceErgonomicsBending

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