Laws of MotionEasy
Question
Three identical blocks of masses m = 2kg are drawn by a force F = 10.2 N with an acceleration of 0.6 ms-2 on a frictions surface, then what is the tension (in N) in the string between the blocks B and C ?
Options
A.9.2
B.7.8
C.4
D.9.8
Solution
Apply Newton′s second law
F - Tab = ma ; Tab - Tbc = ma ∴ Tbc = 7.8 N
F - Tab = ma ; Tab - Tbc = ma ∴ Tbc = 7.8 N
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