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Four round objects namely a ring, a disc, a hollow sphere and a solid sphere with same radius R and made of same material start to roll down an inclined plane at the same time. The object that will reach the bottom third is (a) Solid sphere (b) disc (c) hollow sphere (d) ring Please help me to solve this problem.

```
2 years ago

Khimraj
3007 Points
```							a = gsin$\Theta$/(1 + I/mr2)so higher the I less will be a and more the time taken to reach the bottomso t $\propto$ IIring = mR2Idisc = mR2/2Ihollow sphere =(2/3)mR2Isolid sphere = (2/5)mR2 so  tring > thollow sphere > tdisc > tsolid sphere So correct answer is Disc.
```
2 years ago
Abhinav Gupta
77 Points
```							 a = gsin$\Theta$/(1 + I/mr2)so higher the I less will be a and more the time taken to reach the bottomso t $\propto$ IIring = mR2Idisc = mR2/2Ihollow sphere =(2/3)mR2Isolid sphere = (2/5)mR2 so  tring > thollow sphere > tdisc > tsolid sphere So correct answer is Disc......
```
2 years ago
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• Test paper with Video Solution
• Mind Map
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• NCERT Solutions
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