A series of object are being rotated. The same net torque is being applied to ea

Question

A series of object are being rotated. The same net torque is being applied to each object. Rank the object in order of the resulting angular acceleration (1=lowest).
1 2 3 4  A solid disk spinning about its center. Total mass is M and a radius of R.
1 2 3 4  A solid disk spinning about its center. Total mass is 0.5M and the radius is 2R.
1 2 3 4  A solid sphere spinning about its center. Total mass is 0.5M and the radius is R.
1 2 3 4  An object consisting of two objects connected by a massless rod. Each object has a mass of 2M and is a distance R from the axis of rotation.

Explanation / Answer

answers are bold letters

more I less angular acc.

3) A solid disk spinning about its center. Total mass is M and a radius of R. I = MR2/2

2) A solid disk spinning about its center. Total mass is 0.5M and the radius is 2R. I = MR^2

4) A solid sphere spinning about its center. Total mass is 0.5M and the radius is R. 2/5 *0.5*MR^2

1 )An object consisting of two objects connected by a massless rod. Each object has a mass of 2M and is a distance R from the axis of rotation. 2*2MR^2   

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