In the figure shown, horizontal force \( F_{1} \) is applied on a b...

In the figure shown, horizontal force \( F_{1} \) is applied on a block but the block does not slide. Then as the
\( P \) magnitude of vertical force \( F_{2} \) is increased from zero the block begins to slide; the correct statement is
(1) The magnitude of normal reaction on block increases
(2) Static frictional force acting on the block increases
(3) Maximum value of static frictional force decreases
(4) All of these