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The letters A, B , C and D represent the...


The letters A, B , C and D represent the sign (either+ or -, consistent with the co-ordinate system shown in the figure). FBD of the pulley is also shown in the figure. The symbol `a_(1y)` and `a_(2x)` represent y and x components of magnitude of acceleration of block-1 and block-2 respectively for pulley:
`sumvectau_(CM)=I_(CM)alphahatk:[A]F_(1)r+[B]F_(2)r=I_(CM)alpha_(2)`
Constant:
`a_(1y)=[C]a_(2x)=[D]alpha_(2r)`
Choose the correct option.

A

A=-,B=+,C=-,D=+

B

A=+,B=-,C=-,D=+

C

A=+,B=-,C=-,D=-

D

A=+,B=-,C=+,D=+

Text Solution

Verified by Experts

The correct Answer is:
C
Basic concept of direction.
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