CSO Ergonomics and Manual Handling 1

Question 1

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

Accepted Answer

50 lbs (23 kg)

Answer

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.

Question 2

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

Accepted Answer

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

Answer

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

Question 3

Ergonomics is best defined as:

Accepted Answer

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

Answer

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

Question 4

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

Accepted Answer

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

Answer

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

Question 5

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

Accepted Answer

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

Answer

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

CSO - Common Safety Orientation Practice Test

CSO - Common Safety Orientation Practice Test

CSO Ergonomics and Manual Handling 1