Question

The tension in the string connected between blocks is.

• A. $\frac{80}{3}N$
• B. $\frac{40}{3}N$
• C. $\frac{50}{7}N$
• D. $26N$

Answer 1

The correct option is B $\frac{40}{3}N$

Here,

Taking both masses as a whole,

Let common acceleration be $a$,

$20-10=6a$

$a=\frac{5}{3}$

Taking 4kg mass as a system,

$20-T=4a$

$20-T=\frac{20}{3}$

$T=\frac{40}{3}$

Option $\text{B}$ is the correct answer