I have an assignment that asks to find a torque from given angular velocity, mass and moment of inertia.(adsbygoogle = window.adsbygoogle || []).push({});

For a turntable disk, mass is known as 0.04452199 kilograms

The Angular velocity should be 106.81 (rads/sec)

These values are from solidwork file (anyone familiar with Solidworks?)

Center of mass: ( meters )

X = -0.01474448

Y = -0.00659061

Z = 0.04376940

Principal axes of inertia and principal moments of inertia: ( kilograms *

square meters )

Taken at the center of mass.

Ix = (-0.70029829, 0.71385033, 0.00002079) Px = 0.00001872

Iy = (-0.71385033, -0.70029829, -0.00002111) Py = 0.00001875

Iz = (0.00000000, -0.00002962, 1.00000000) Pz = 0.00003073

Moments of inertia: ( kilograms * square meters )

Taken at the center of mass and aligned with the output coordinate system.

Lxx = 0.00001874 Lxy = -0.00000001 Lxz = 0.00000000

Lyx = -0.00000001 Lyy = 0.00001874 Lyz = 0.00000000

Lzx = 0.00000000 Lzy = 0.00000000 Lzz = 0.00003073

Moments of inertia: ( kilograms * square meters )

Taken at the output coordinate system.

Ixx = 0.00010596 Ixy = 0.00000431 Ixz = -0.00002873

Iyx = 0.00000431 Iyy = 0.00011371 Iyz = -0.00001284

Izx = -0.00002873 Izy = -0.00001284 Izz = 0.00004234

As far as I know, equation for torque is angular acceleration X moment of inertia,

but in this case, I don't have Angular acceleration but velocity. and Radius is unknown.

Is it possible to get a value of Torque from these information? I am keep looking for way to approach this question but I am having a hard time with it.

Any help will be appreciated.

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# Homework Help: Torque from moment of inertia

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