How Much Force Is Needed to Move a 1960 N Block of Dry Ice?

[Ahmad786]

16. A block of dry ice weighing 1960 N is lying on a walkway. The coeffi cient of friction of
the walking surface is 0.125. With what force must you push or pull the block to move it?
A. 1.57 x 104 N
B. 1960 N
C. 245 N
D. 6.38 x 10-5 N
(For this I multiplyed 1960N (which is the Fn or fg) by the coefficient of friction on the walking surface which is 0.125)
Is this correct?

 

[CompuChip]

The answer is correct.
The force [question: should you take gravitational or normal force here? e.g. on an inclined surface, these are not equal] multiplied by coefficient of friction gives the maximal frictional force. To get the block moving, you should exert at least this force [question: which physical law tells you that?].