# Inelastic Sphere Collision!

A uniform rigid sphere having radius $$R$$ moving with velocity $${ v }_{ o }$$ and angular velocity $${ \omega }_{ o } =\cfrac { { v }_{ o } }{ R }$$ strikes a horizontal rough surface having coefficient of friction $$\mu$$ . If coefficient of restitution for collision is $$e=1/2$$.
Let angular velocity and Velocity of centre of sphere after immediately after the collision is in 'x' and 'y' direction will be expressed as :

\begin{align} { v }_{ x } &= \cfrac { a }{ b } \times \mu { v }_{ o }\\ { v }_{ y }&= \cfrac { c }{ d } \times { v }_{ o }\\ { { \omega } }^{ " }&= \cfrac { (\alpha -\beta \times \mu ) }{ \gamma R } \times { v }_{ o } \end{align}

Then find the value of :

$a + b + c + d + \alpha +\beta +\gamma.$

Details and assumptions

$$\bullet$$ gcd (a , b ) = 1

$$\bullet$$ gcd (c,d ) = 1

$$\bullet$$ gcd ($$\alpha$$ , $$\beta$$ ) = 1

$$\bullet$$ gcd ( $$\gamma$$ , $$\beta$$ ) = 1

$$\bullet$$ All are positive integers.

$$\bullet$$ Take clockwise direction as positive.

###### This is part of my set Deepanshu's Mechanics Blasts

Source : My Friend give me as challange , Unfortunately He is not on Brilliant .

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