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A rectangular block has a square base me...

A rectangular block has a square base measuring `axxa` and its height is `h`. It moves on a horizontal surface in a direction perpendicular to one of the edges. The coefficient of friction is `mu`. It will topple if

A

`mu gt a//2h`

B

`mu gt 2a//h`

C

`mu gt a//h`

D

`mu gt h//a`

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The correct Answer is:
A
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