Question

A block of mass 2kg is placed on the floor the coefficient of static friction is 0.4. If a force of 2.5N is applied on the block parallel to the floor , the force of friction between the block and floor.is

Answer 1

8N is required to move the block ,
but if we give less force then the force of friction = your given force in less force case,
so your answer is 2.5N

Answer 2

$\textbf{Answer is in Attachment !}$