The friction coefficient between A &B is μ 1=0.25 and between B floor is μ 2=0.2. The horizontal force F needed to move the block B is :-

Question

The friction coefficient between A &B is μ 1=0.25 and between B floor is μ 2=0.2. The horizontal force F needed to move the block B is :- <img class="img-fluid question-image" alt="Question" src="https://cdn.tardigrade.in/q/nta/p-uluvkqljjm7fdyos.jpg" /> (A) 500N (B) 1100N (C) 1500N (D) 2200N

Tardigrade Admin · Accepted Answer

f1=0.25× 2000 =500N Solution

f2=0.2(.200+300.)× 10=1000N F=f1+f2=1500N

Q. The friction coefficient between $A & B$ is $μ_{1} = 0.25$ and between $B &$ floor is $μ_{2} = 0.2.$ The horizontal force $F$ needed to move the block $B$ is :-

$500 N$

$1100 N$

$1500 N$

$2200 N$

$f_{1} = 0.25 \times 2000$
$= 500 N$

$f_{2} = 0.2 (200 + 300) \times 10 = 1000 N$
$F = f_{1} + f_{2} = 1500 N$

Q. The friction coefficient between A&B is μ1​=0.25 and between B& floor is μ2​=0.2. The horizontal force F needed to move the block B is :-

500N

1100N

1500N

2200N