Question

Describe situations when friction is welcome to the human body functions and when it is not

Answer 1

Situations where FRICTION IS NEEDED BY HUMANS:

• During walking, friction helps us to stand and walk properly. In absence of friction, we would have slipped and hypothetically move forever.

• Friction helps our hands to pick up/hold objects. In absence of friction, they would have fallen from our hands.

Situations where FRICTION IS NOT USEFUL FOR HUMANS:

• Due to friction in our skin, whenever we get electrocuted, the electricity experiences resistance and induces secondary burn injuries.

$\star$ Hope It Helps.

Answer 2

Answer:during walking,lifting loads

Explanation:

friction enables us to walk free without slipperly otherwise without it hypothertically would be walking forever..

when lifting heavy load friction force and normal force acts on the object known as frictional gravitation force