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Chapter 7: Q21Q (page 170)

Why do you tend to lean backward when carrying a heavy load in your arms?

Short Answer

Expert verified

When you lean backward with a load in your arms, the center of mass becomes stable, and you are able to move forward without much difficulty.

Step by step solution

01

Determine the condition for the stability of the human body

The center of mass of the human body depends on gender.The center of mass of a stable human body is above the feet and almost 10 cm below the navel.

02

Explanation for leaning backward with a heavy load in your arm

When you carry a heavy load in your arms and stand straight, the center of mass is out of your body (in front of your body). It is due to the combined weight of your body and the load you are carrying. It will be difficult for you to move forward with the heavy load in the straight standing position.

When you lean backward with the load in your arms, the center of mass makes a slight shift and attains the stable position. It helps you move forward easily.

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