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  • A thin spherical shell is released from rest from top of an inclined plane of inclination 60° and its top is at a height of 12m from the ground.If the friction is sufficient enough to avoid sli

A thin spherical shell is released from rest from top of an inclined plane of inclination 60° and its top is at a height of 12m from the ground.If the friction is sufficient enough to avoid slipping ,inclined plane is- [given g=10m/s2]

Option: 1

12m/s


Option: 2

8m/s


Option: 3

16m/s


Option: 4

4m/s


Answers (1)

best_answer

Using energy conservation 

mgh=\frac{1}{2}mv^{2}+\frac{1}{2}I_{c.m}w^{2}\\ v^{2}=\frac{6gh}{5}=\frac{6\times 10\times 12}{5}=144\\ v=12m/s

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Gunjita

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