Question

Bodies $A,B$ and $C$ of masses $4kg,1kg$ and $3kg$ respectively are hanging as shown in figure. If the pulley is frictionless, find the common acceleration and the tensions in the two strings. Given: $g=10{m/s}^2$.

Answer 1

$F_{net}$ = $M_{\left(total\right)}\times a_{net}$

$a_{net}$ = $\frac{Fnet}{Mtotal}$

$a_{net}=\frac{4g+g-3g}{4+1+3}$

$a_{net}=\frac{20}{9}$ ${m/s}^2$