A) 6 N
B) 8 N
C) 18 N
D) 2 N
Correct Answer: A
Solution :
[a] Acceleration of system \[a=\frac{{{F}_{net}}}{{{M}_{total}}}\] \[=\frac{14}{4+2+1}=\frac{14}{7}=2\text{ m/}{{\text{s}}^{2}}\] The contact force between A and B \[=\left( {{m}_{B}}+{{m}_{C}} \right)\times a=\left( 2+1 \right)\times 2=6\text{ N}\]You need to login to perform this action.
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