the mass, R is the distance the mass is from the axis of rotation. To find the rotational inertia experimentally, a known torque is applied to the object and the resulting angular acceleration is measured. = I , where α is the angular acceleration.

Rotating apparatus for determining angular acceleration as a function of the torque and for determining the moment of inertia depending on mass and distance from an axis. An axle on agate bearings supports a cross bar to which weights can be attached.

For a body to be in rotational equilibrium, the net torque on it must equal zero. This is the case in both Figures 3c and 3d. In Figure 3c, the two equal forces F1 and F2 act with equal lever arms r⊥. Force F2 applies a negative, clockwise (cw), torque of –r⊥F2.

When an object is in rotational equilibrium, we can use the fact that the sum of the torques must be zero to find the different individual forces acting on that object. One example for this is a beam balancing at its center on a fulcrum with two weights at either end. Weight 2 is 1.3 meters from the fulcrum.

An object is in rotational equilibrium if the velocity of its rotation is constant. An object that is not rotating or an object that is rotating in one direction a constant rate would be considered in rotational equilibrium.

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.

Rotational Equilibrium An object is in rotational equilibirum (its angular momentum is constant) if the sum of the torques acting on it is zero. An object will be in equilibrium if it is suspended from its center of gravity or its center of gravity is below the suspension point.

In rotational motion, a torque causes a mass with some amount of rotational inertia, to exhibit angular acceleration. Also, just as an object could be in equilibrium when the forces on it add up to zero, an object can be in rotational equilibrium when the net torque on it is zero.

What is required for an object to be in rotational equilibrium? The sum of the torques acting on it must be zero.

A rotating body or system can be in equilibrium if its rate of rotation is constant and remains unchanged by the forces acting on it. The magnitude of torque about a axis of rotation is defined to be τ=rFsinθ.

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