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In figure (i) surface is rough and net f...

In figure (i) surface is rough and net force on the block has magnitude `F_(1)` . In figure (ii) surface is smooth and net force on the block has magnitude `F_(2)`. In figure (iii) again surface is rough and net force has magnitude `F_(3)`. In cases (i) block is moving up and in cases (ii) and (iii) block is moving down. `[theta gt tan^(-1) (mu)` for (i) and (iii)] Then,

A

`F_(1) gt F_(2) gt F_(3)`

B

`F_(2) gt F_(3) gt F_(1)`

C

`F_(3) gt F_(2) gt F_(1)`

D

`F_(1) gt f_(3) gt F_(2)`

Text Solution

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The correct Answer is:
A
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