A block of mass 
is initially at rest on a horizontal surface. A horizontal force 
and a vertical force 
are then applied to the block. The coefficients of static friction and kinetic friction for the block and the surfaces are 0.4 and 0.25 , respectively. The magnitude of the frictional force acting on the block is (assume, 
)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Lêt's draw its 
Along 
-direction
along 
-direction
Given, 
and 
or 
……(iii)
Hence, static friction, 
Clearly, 
So block will move and kinetic friction will act So, friction force (kinetic) is
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