12. Three identical blocks of masses m = 8 kg are drawn by
a force 10.2 N on a frictionless surface. What is the
tension (in N) in the string between the blocks B and C?
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Answer:
Let the tension between B and C be T
M=2kg
F−T=ma
10.2−T=ma
10.2−T=2×0.6
10.2−T=1.2
10.5−1.2=T
T=9N
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