[Ether]

Figure1 is a top view of a block sitting on a table.

The block weighs 10 Newtons.

The coefficient of static friction between the block and the table is 0.8 (the same in all directions).

A force F1 = 6 Newtons is applied to the block (yellow arrow).

A force F2 (blue arrow) is then slowly applied in the direction shown. At what magnitude of F2 does the block begin to slide?