How Much Force Must a Man of Shoulder-Height 1

question 21

Multiple Choice

How much force must a man of shoulder-height 1.8 m and mass 70 kg exert on both hands in order to do a push-up, assuming that his body's centre of mass is 1.0 m from his feet?

• A)38.9 N
• B)77.8 N
• C)381.1 N
• D)762.1 N

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Definitions:

Deoxygenated Blood

Blood that is rich in carbon dioxide and low in oxygen. It returns to the lungs for oxygenation.

Lungs

The primary organs of the respiratory system, responsible for gas exchange where blood is oxygenated and carbon dioxide is removed.

Fatty Plaque

Accumulation of lipids within the walls of arteries, leading to atherosclerosis and potential cardiovascular disease.

Arteries

Blood vessels that carry oxygen-rich blood away from the heart to the rest of the body.