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Impending state of motion is a critical border line between static and dynamic states of a body A block of mass m is supported on a rough vertical wall by applying a rough vertical wall by applying a force F as shown in figure coefficient of static friction between block and wall is `mu` The block under the influence F sin`theta` may have a tendency to move upward or it may be assumed that F `sin theta` just prevents downward fall of the block read the above prevents downward fall of the block .Read the above passage carefully and answer the following question. if F is the force applied on the block as shown and `F_("min") ` is the minimum value of force required to keep the block stationary . then choose the correct alternative.

A

`If Flt F_("min"),` the block slides downward

B

`If Flt F_("min"),` the block will slide upwards

C

Both are correct

D

Both are wrong

Text Solution

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The correct Answer is:
a
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