Question

answer my question number 11.. no spam only genius

Answer 1

a lever is a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge or fulcrum.

Answer 2

Bones,muscles and ligaments form levers in human body.
It helps in movement of our body.
It is of 3 types...

1) First class :-It helps in movement of our head. Therefore it is present between our skull and vertebral column.

2) Second class :- It is found in our limbs. While standing it helps us to maintain the proper balance while standing.

3) Third class :- With this type of lever the force being applied between the axis and the resistance, are designed to produce speed and range of motion movements. Most of the levers in the human body are of this type.

Hope it helps...:-))