A.) The figure shows two disks, A and B, cemented together, that are rotating wi

Question

A.) The figure shows two disks, A and B, cemented together, that are rotating with angular acceleration . The radius of the small disk B is 3/4 the radius of the larger disk. Calculate the ratio of the tangential velocity of a point on the rim of disk A to the tangential velocity of a point on the rim of disk B VA Please Explain and show all work. thank you! VB B.)For the two disks what is the ratio of the linear acceleration of a point on the rim of disk A to the linear acceleration of a point on the rim of disk B?

Explanation / Answer

(A) v = w r

w = angular acceleration will be same.

vA / vB = rA / rB = 4/3 .....Ans

(B) tangetial acc, a_t = alpha r

and radial acc, a_r = w^2 r

a = sqrt(a_t^2 + a_r^2) = r sqrt(alpha^2 + w^4)

aA / aB = rA / rB = 4/3 ....Ans

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