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INPHO -2005

Rolling sphere :-

A sphere of radius R is projected up an inclined plane of angle \(\theta\) with initial speed u and angular velocity \({ \omega }_{ 0 }\) in the direction such that it will roll up. The coefficient of friction is \(tan(\theta )/7\) and it is given that u> \({ \omega }_{ 0 }\) . Give the direction of friction for different parts of motion as sphere rises. Obtain the time for which sphere moves up the plane till it stops.

Note by Tushar Gopalka
2 years, 4 months ago

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How did you solve it? Rajat Gupta · 2 years, 4 months ago

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@Rajat Gupta Is the answer correct?? Abhineet Nayyar · 2 years, 4 months ago

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Is the time \(\frac { 19u+2R{ \omega }_{ 0 } }{ 21gsin{ \theta } } \) ???? Abhineet Nayyar · 2 years, 4 months ago

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Answer pls Rajat Gupta · 2 years, 4 months ago

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@Mvs Saketh , @Ronak Agarwal @Deepanshu Gupta @jatin yadav @Calvin Lin @David Mattingly , its an awesome question. Solve it and enjoy. Tushar Gopalka · 2 years, 4 months ago

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