Question

Three equal masses of $3 \,kg$ are connected by massless string of cross sectional area $0.005$ $cm^{2}$ and Young?? modulus $2\times10^{11} N /m^{2}$. In the absence of friction, the longitudinal strain in the wire

• A. $A$ is $10^{-4}$
• B. $B$ is $2\times10^{-4}$
• C. Both (a) and (b)
• D. None of these

Answer 1

Answer: (C)

Both (a) and (b)

Answer 2

$3g-T_{B}=3a$ $T_{A}=3a$