At an instant the link AB of length r has an angular velocity ‚âà√¨‚àö¬¢ and an angular acceleration ‚âà√≠¬¨¬±. What is the total acceleration of AB?$

[(‚âà√¨‚àö¬¢r) 2 + ‚âà√≠¬¨¬±r) 2 ] 1/2

[(‚âà√¨‚àö¬¢2r)2 + ‚âà√≠¬¨¬±r)2]1/2

[(‚âà√¨‚àö¬¢r)2 + ‚âà√≠¬¨¬±r)2]1/2

[(‚âà√¨‚àö¬¢2r)2 + ‚âà√≠¬¨¬±r)]1/2

[(‚âà√¨‚àö¬¢2r)2 + ‚âà√≠¬¨¬±r)2]1/2

At an instant the link AB of length r has an angular velocity ‚âà�

1.	At an instant the link AB of length r has an angular velocity ‚âà√¨‚àö¬¢ and an angular acceleration ‚âà√≠¬¨¬±. What is the total acceleration of AB?$
A.	[(‚âà√¨‚àö¬¢<sup>2</sup>r)<sup>2</sup> + ‚âà√≠¬¨¬±r)<sup>2</sup>]<sup>1/2</sup>
B.	[(‚âà√¨‚àö¬¢r)<sup>2</sup> + ‚âà√≠¬¨¬±r)<sup>2</sup>]<sup>1/2</sup>
C.	[(‚âà√¨‚àö¬¢<sup>2</sup>r)<sup>2</sup> + ‚âà√≠¬¨¬±r)]<sup>1/2</sup>
D.	[(‚âà√¨‚àö¬¢<sup>2</sup>r)2 + ‚âà√≠¬¨¬±r)<sup>2</sup>]<sup>1/2</sup>
Answer» B. [(‚âà√¨‚àö¬¢r)<sup>2</sup> + ‚âà√≠¬¨¬±r)<sup>2</sup>]<sup>1/2</sup>