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A block of mass "m" is placed on a surfa...

A block of mass "m" is placed on a surface having vertical crossection given by `y=x^(2)/4`.If coefficient of friction is "0.5" ,the maximum height above the ground at which block can be placed without slipping is:

A

1/3 m

B

1/4 m

C

1/6 m

D

1/2 m

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