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A block of mass m is stationary on a hor...

A block of mass `m` is stationary on a horizontal surface. It is connected with a string which has no tension. The coefficient of friction between the block and surface is `m` . Then , the frictional force between the block and surface is:

A

zero

B

`mumg`

C

`(mumg)/(mu)`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
`f_(s)=mumg` , `Fltf_(s)` . If applied force is less than limiting friction force then frictional force is equal to the applied force. `f=F` .
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A2Z-NEWTONS LAWS OF MOTION-Basic Concept Of Static And Kinetic Frictions
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