If magnitude of contact force between 2 kg and 4 kg is $f_{1}$ and between 4 kg and 6 kg is $f_{2}$ . Find out $f_{1} + f_{2} ($ in N $) :$

Question

If magnitude of contact force between 2 kg and 4 kg is f 1 ​ and between 4 kg and 6 kg is f 2 ​ . Find out f 1 ​ + f 2 ​ ( in N ) :

TestHub · Accepted Answer

System ( 2 + 4 + 6 ) kg ​ 24 − 12 = 12 a a = 1 m / s 2 System 2 k g System 6 k g 24 − f 1 ​ = 2 ( a ) f 2 ​ − 12 = 6 ( a ) f 1 ​ = 22 N f 2 ​ = 18 N ​

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