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An ideal inextensible string is wrapped ...

An ideal inextensible string is wrapped over the disc of mass m and radius R. The other end of the string is connected to mass m. the string is passing over an ideal pulley A as shown in the figure. At any time t, mass m and disc are moving downward with acceleration of magnitude `a_(1) " and " a_(2)` respectively. The disc is rotating clockwise with angular acceleration of magnitude ` alpha` . There is no slipping betweeb string and disc. choose the incorrect option

A

`a_(1)=a_(2)`

B

`alphaR gt a_(1)`

C

`alpha Rgta_(2)`

D

`alphaRlta_(2)`

Text Solution

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The correct Answer is:
D
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