# 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
4 years, 10 months ago

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Sort by:

- 4 years, 10 months ago

Is the time $\frac { 19u+2R{ \omega }_{ 0 } }{ 21gsin{ \theta } }$ ????

- 4 years, 10 months ago

How did you solve it?

- 4 years, 10 months ago

- 4 years, 10 months ago

\bump

- 2 weeks, 6 days ago

@Mvs Saketh , @Ronak Agarwal @Deepanshu Gupta @jatin yadav @Calvin Lin @David Mattingly , its an awesome question. Solve it and enjoy.

- 4 years, 10 months ago