Question

6.) Two masses A and B of 10 kg and 5 kg
respectively are connected with a string
passing over a frictionless pulley fixed
at the corner of a table as shown. The
coefficient of static friction of A with
table is 0.2. The minimum mass of C
that may be placed on A to prevent it
from moving is
1. 15 kg
3.5 kg
2.10 kg
4.12 kg
dynth​

Answer 1

Ans is option 1

i.e 15 kg

Refer pic for solution