Practice Test GeeksCSO - Common Safety Orientation Practice Test
← All CSO Flashcard Decks

Ergonomics and Manual Handling Flashcards

7 cards from real CSO practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Ergonomics and Manual Handling flashcards as text

  1. What is the generally accepted maximum recommended weight for a single person to lift manually without mechanical assistance in most US workplaces?

    Answer: 50 lbs (23 kg)

    NIOSH and most US safety guidelines cite approximately 50 lbs (23 kg) as the upper recommended limit for a single-person manual lift under ideal conditions.

  2. Which of the following best describes the correct technique for manually lifting a heavy object from the floor?

    Answer: Bend at the knees, keep the back straight, and lift using leg muscles

    Bending the knees, maintaining a straight back, and using the powerful leg muscles protects the spine from injury during lifting.

  3. Ergonomics is best defined as:

    Answer: The science of designing work environments and tools to fit the human body and reduce injury

    Ergonomics is the scientific discipline focused on fitting tasks, tools, and environments to workers to reduce physical strain and injury risk.

  4. When manually lifting a load, how should the object be positioned relative to your body?

    Answer: As close to the body as possible, near the center of gravity

    Keeping the load close to the body significantly reduces the moment arm and the stress placed on the lower back muscles and spine.

  5. Which of the following is a common early warning sign of a musculoskeletal disorder (MSD)?

    Answer: Persistent pain, stiffness, tenderness, or discomfort in muscles or joints

    Early MSDs often present as persistent pain, stiffness, or discomfort that should be reported promptly before the condition worsens.

  6. What is the primary goal of applying ergonomic principles in the workplace?

    Answer: To reduce worker fatigue and injury risk by adapting work conditions to fit the worker

    Ergonomics aims to fit the job to the worker — reducing physical stress, fatigue, and the risk of musculoskeletal injuries.

  7. Which body movement during manual lifting places the greatest stress on the lumbar (lower) spine?

    Answer: Twisting or rotating the torso while bearing a load

    Twisting the torso under load dramatically increases compressive and shear forces on the lumbar spine discs and is a leading cause of back injuries.