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Question

A fixed wedge with both surfaces inclined at 45 to the horizontal is shown in the figure. A block P of mass m is held on the smooth plane by a light string which passes over a smooth pulley A and is attached to a block Q of mass 3m which rests on the rough plane. The system is released from rest. Given that the acceleration of each block is of magnitude g52 then, the tension in the string is 



Your Answer
A
mg
Correct Answer
B
6mg52
Your Answer
C
mg2
Your Answer
D
mg4

Solution

The correct option is C 6mg52
Applying Newton's second law for mass m
Tmgsin45=ma
Tmg2=mg52
Given, a=g52
T=65mg2

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