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Question


Find contact force between 6 kg & 4 kg.


Correct Answer
A
0 N
Your Answer
B
12 N
Your Answer
C
8 N
Your Answer
D
6 N

Solution

The correct option is D 0 N
Let's assume the bodies move with common acceleration a.
Then, a = 12 + 86 + 4 = 2 ms2
Now for the first block, 
F  N = 6a12  N = 12N = 0


 

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