A block mass 10 kg rests on a horizontal floor. The acceleration

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A block mass 10 kg rests on a horizontal floor. The acceleration due to gravity is 9.81 m/s². The coefficient of static friction between the floor and the block is 0.2. A horizontal force of 10 N is applied on the block as shown in the figure. The magnitude of force of friction (in N) on the block is

1. 14N
2. 11N
3. 10N
4. 9N

Correct Option: C

Here, μ = 0.2
g = 9.81 m/s²
M = 10 kg
(f_s)_max = μMg
= 0.2 × 10 × 9.81 = 19.62N
As, (F_s)_max > Force applied
So, magnitude of force of friction on block is,
(F_s) = 10N