A uniform 40 N board supports a father (800 N) and daughter (350 N) as shown in the figure below. The support is under the center of gravity of the board and the father is 1.00 m from the center. Determine the magnitude of the upward force n exerted on the board by the Determine where the child should sit (x) to balance the system

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Rotational Equilibrium And Rotational Dynamics

In physics, the state of balance between the forces and the dynamics of motion is called the equilibrium state. The balance between various forces acting on a system in a rotational motion is called rotational equilibrium or rotational dynamics. 

Equilibrium of Forces

The tension created on one body during push or pull is known as force.