CSO Ergonomics and Manual Handling

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

25 lbs (11 kg)

Answer

75 lbs (34 kg)

Answer

100 lbs (45 kg)

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

Bend at the waist with legs straight to use back muscles

Answer

Twist your torso as you lift to distribute weight evenly

Answer

Lift as quickly as possible to minimize time under load

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

The study of workplace accidents and fatality statistics

Answer

A category of personal protective equipment for heavy lifting

Answer

A set of rules governing the maximum weight employees may carry

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

At arm's length to protect your feet from dropped objects

Answer

At shoulder height before beginning the lift

Answer

Shifted to one side to free one hand for balance

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

Increased energy and improved alertness during repetitive tasks

Answer

Faster and more efficient completion of manual tasks

Answer

Improved grip strength after repeated handling

Question 6

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

Accepted Answer

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

Answer

To maximize production speed by reducing rest breaks

Answer

To eliminate the need for personal protective equipment entirely

Answer

To standardize all job tasks so every worker performs them identically

Question 7

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

Accepted Answer

Twisting or rotating the torso while bearing a load

Answer

Bending the knees before lifting

Answer

Keeping the load close to the body during the lift

Answer

Using a wide, stable stance as a base of support