Mass of block = 5 kg
coefficient of static friction, = 0.4
coefficient of kinetic friction = 0.3
limiting friction =
×m×g=0.4×5×10 = 20N
Until a force greater than 20N is applied, the block won't move. For any force F ≤ limiting friction, the value of friction will be F since friction is a self-adjusting force.
So when a force 10N is applied, the friction between block and table is 10N