If the mass of the block A=10kg and the coefficient of static and kinetic friction is 0.2 , then the mass of block B to start the motion is

Question

If the mass of the block A=10kg and the coefficient of static and kinetic friction is 0.2 , then the mass of block B to start the motion is <img class="img-fluid question-image" alt="Question" src="https://cdn.tardigrade.in/q/nta/p-mczikshekpkazd1s.jpg" /> (A) 2kg (B)  text2.2kg (C)  text4.8kg (D) 200g

Tardigrade Admin · Accepted Answer

μ s=(mB/mA)⇒ text0.2=(mB/10)⇒ mB=2kg

Q. If the mass of the block $A = 10 k g$ and the coefficient of static and kinetic friction is $0.2$ , then the mass of block $B$ to start the motion is

$2 k g$

$2.2 k g$

$4.8 k g$

$200 g$

$μ_{s} = \frac{m _{B}}{m _{A}} \Rightarrow 0.2 = \frac{m _{B}}{10} \Rightarrow m_{B} = 2 k g$

Q. If the mass of the block A=10kg and the coefficient of static and kinetic friction is 0.2 , then the mass of block B to start the motion is

2kg

2.2kg

4.8kg

200g