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.

#Mechanics

Easy Math Editor

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Comments

Answer pls

Rajat Gupta - 6 years, 4 months ago

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

A Former Brilliant Member - 6 years, 4 months ago

How did you solve it?

Rajat Gupta - 6 years, 4 months ago

Is the answer correct??

A Former Brilliant Member - 6 years, 4 months ago

\bump

Kushal Thaman - 1 year, 7 months ago

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

Tushar Gopalka - 6 years, 4 months ago

Math	Appears as
Remember to wrap math in `\(` ... `\)` or `\[` ... `\]` to ensure proper formatting.
`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
`\frac{2}{3}`	$\frac{2}{3}$
`\sqrt{2}`	$\sqrt{2}$
`\sum_{i=1}^3`	$\sum_{i=1}^3$
`\sin \theta`	$\sin \theta$
`\boxed{123}`	$\boxed{123}$