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`        A hollow rod of radius R1 and R2 such that R2 is greater than R1Arnold solid rod of radius r are used to transmit power if they have the same mass and density which rod is stronger ?`
2 months ago

## Answers : (2)

Arun
23760 Points
```							Mass of the cylinder =  mOutside radius = r₂Inside radius = r₁So the axis parallel to its symmetrical axis ( through its centre) and tangential to the outer surface means an axis on the outer surface through the length of the cylinder.Moment of inertia on the symmetrical axis I₁ = (m/2) (r₁² + r₂²)Following the parallel axis theorem, moment of inertia on the mentioned axis, I₂ = I₁ + mr₂² [ mass x distance from symmetrical axis ]that is, I₂ = (m/2) (r₁² + r₂²) + mr₂²or, I₂ = m [ (r₁²/2) + {(r₂²/2) + r₂²}or I₂ = (m/2) [ r₁² + 3r₂² ]So the answer is (m/2) (r₁² + r₂²)
```
2 months ago
Vikas TU
10469 Points
```							Dear student The ans is not completeArnold solid rod will be stronger. Hope this will help Good Luck
```
2 months ago
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### Course Features

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### Course Features

• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions