Laws Of Motion Question 368
Question: If mass of $ A=10kg $ , coefficient of static friction = 0.2, coefficient of kinetic friction = 0.2. Then mass of B to start motion is[Orissa PMT 2004]
Options:
A)2 kg
B)2.2 kg
C)4.8 kg
D)200 gm
Show Answer
Answer:
Correct Answer: A
Solution:
$ {{\mu } _{s}}=\frac{m _{B}}{m _{A}}\ \ \Rightarrow \ 0.2=\frac{m _{B}}{10}\ \ \Rightarrow m _{B}=2\ kg $
