What type of lever acts when we nod our head? | Nodding of Head as Lever

Last updated on April 15th, 2021 at 02:21 pm

The nodding of the head acts as a first-class lever (also known as class I or type 1 lever).

In this lever, the skull acts as the lever arm. Pivot is the place where our skull meets the top of our spine. And the neck muscles at the back of the skull provide the force (effort) to lift our head up against the weight of the head (load). When the neck muscles relax, our head nods forward.

Nodding of Head as Lever

Summary:
The junction of the skull and spine-top is the pivot.
The neck muscles at the back of the skull provide effort.
The weight of the head acts as the load.
Skull acts as the lever arm.
The nodding of the head acts as a first-class lever (also known as class I or type 1 lever).
(Refer to the diagram below)

FAQ

Where do we find a first-class lever (class I lever) in our body?

While we nod our head, the mechanism consisting of neck muscles(effort), head(load), and the joint between skull and spine top(fulcrum) acts as the first-class lever.

Where can we get details of types of levers with examples?

You can visit this link in this site to get this detail: Types of levers with examples