# moment of inertia

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Moment of force = force (F) × distance (D) from the 'pivot' at the knee.

## moment of inertia

a body or object's resistance to angular acceleration or deceleration. Depends on the mass of the object and the distribution of the mass in relation to the point of rotation. The summation of all the masses of the parts of the body multiplied by their distance squared from the axis of rotation (I = Σmr2) or the mass of the whole body multiplied by the radius of gyration squared.
References in periodicals archive ?
In spite of the fact that the inertia of the occupant dominates the reactance torque, changes in the rigid body yaw rotational inertia of the wheelchair assembly ([I.
Of these, the rigid body yaw rotational inertia of the occupant and the rigid body yaw rotational inertia of the wheelchair assembly are most significant, i.
The rotational inertia of manual wheelchairs is important because even a slight mass redistribution within the system can cause an affective change in required propulsion effort.
As indicated in Equation (6), the rotational inertia is inversely proportional to the square of the measured resonance frequency.
The configurations are listed in order of increasing rotational inertia and illustrate a highly linear relationship between the masses and inertias.
The reactive torque from the wheelchair rotational inertia is [T.
The highly linear trend in Figure 5 shows that the measured rotational inertia is strongly correlated with the mass of the wheelchair configuration.
By adding mass far away from their bodies, the performers increase their rotational inertia.

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