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  4. Two blocks of masses m1=4 kg and m2=2 kg are connected to the ends of a string which passes over a massless, frictionless pulley. The total downwards thrust on the pulley is nearly <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/p-fd5vcupojuldipm1.jpg />

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Q. Two blocks of masses $m_{1}=4$ kg and $m_{2}=2$ kg are connected to the ends of a string which passes over a massless, frictionless pulley. The total downwards thrust on the pulley is nearly
Question

NTA AbhyasNTA Abhyas 2022

Solution:

$T=\frac{2 m_{1} m_{2}}{m_{1} + m_{2}}g=\frac{2 \times 4 \times 2 \times 10}{4 + 2}$
$=\frac{160}{6}=26.6=27 \, N$
Total downward thrust on the pulley
$=2T=2\times 27=54$ N