Question

If the coefficient of friction between the block of
mass 5 kg and wall is 0.5, then minimum force F
required to hold the block with the wall is
(g = 10 m/s)
[NCERT Pg. 1011
F
5 kg H = 0,5
u
(1) 10 N
(2) 100 N
(4) 50N
(3) 40 N​

Answer 1

Answer:

Frictional force (Ff)= coefficient of friction (μ) × Normal Force (Fn)

Ff = μ × Fn

Fn=mass × acceleration due to gravity (g)

Explanation:

m = 5 kg

μ = 0.5  

g = 10 m/s²

Fn = m × g

Fn = 5 kg × 10 m/s²

Fn = 50 kg m/s²

Ff = μ × Fn

Ff = 0.5 × 50 kg m/s²

Ff = 25 kg m/s² or Ff = 25 N

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