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A block of mass m is in contact with the...

A block of mass m is in contact with the cart C as shown in the figure

The coefficient of static friction between the block and the cart is `mu`. The acceleration `alpha` of the cart that will prevent the block from falling satisfies.

A

`alpha gt (mg)/(mu)`

B

`alpha gt (g)/(mu m)`

C

`alpha ge (g)/(mu)`

D

`alpha lt (g)/(mu)`

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