Question

Two bodies of masses 0.03 kg, nad 0.04 kg, are tied to the ends of a massless string. This string passes over the frictionless pulley. The tension in the string is

• A. 0.336N
• B. 0.294N
• C. 683N
• D. 0.392N

Answer 1

The correct option is A 0.336N

$F{g}_2-F{g}_1=(0.03+0.04)a$ (0.04kg mass is more likely to fall)

$\left(9.8\right)\left(0.04\right)-\left(9.8\right)\left(0.03\right)=0.07a$

$a=1.4m/s^2$

for tension:

$F{g}_2-T=0.04\ast 1.4$

$T=0.336N$