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  3. 2. if each of the following objects are rotating w

2. If each of the following objects are rotating with the same angular velocity, ?, which...

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Physics

2. If each of the following objects are rotating withthe same angular velocity, ?, which would be the hardest to stop?(i.e., require the largest amount of work).

A hoop with mass (1/2)M and radius 2R rotating about itscylinder axis.

A solid cylinder with mass 4M and radius (3/4)R rotating aboutits cylinder axis.

A solid sphere with mass 8M and radius (2/3)R rotating about anydiameter.

A hoop with mass 4M and radius (1/2)R rotating about itscylinder axis.

A thin spherical shell with mass 8M and radius (1/2)R rotatingabout any diameter.

3. If an object is in equilibrium, which of thefollowing are true? There may be more than one correctanswer.

There can only be one torqueon the object.
The net torque on the objectis zero.
The object may be atrest.
The object may have a constantvelocity.

The net force on the object is zero.

PLEASE ANSWER BOTH OF THE QUESTIONS

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