. Choose the correct statements
The coefficient of friction between 4 kg and 5 kg blocks is 0.2 and between 5 kg block and ground is 0.1 respectively
A. Minimum force needed to cause system to move is 17 N
B. When force is 4N static friction at all surfaces is 4N to keep system at rest
C. Maximum acceleration of 4kg block is 2m/s2
D. Slipping between 4kg and 5 kg blocks start when F is 17N
Best Answer
Ans: C
Sol: So, block 'Q’ is moving due to force while block ‘P’ due to friction.
Friction direction on both P + Q blocks as shown.
.PNG)
First block ‘Q’ will move, and P will move with ‘Q’ so by FBD taking ‘P’ and ‘Q’ as system
F - 9 = 0
F = 9 N
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