Question

how do we find the net effect of two unbalanced forces which are acting in the same direction and acting in oppsite direction

Answer 1

Let the unbalanced forces be $\(F_1\) and \(F_2\)$.

When the two unbalanced forces are acting in the same direction then, we will add both the forces. The resultant of the two unbalanced forces will be $\(F_n_e_t\)$.

$\(F_n_e_t = F_1 + F_2\)$

When the two unbalanced forces are acting in the opposite direction then, we will subtract the smaller force from the bigger force. The resultant of the two unbalanced forces will be $\(F_n_e_t\)$.

$\(F_n_e_t = F_1 - F_2\)$

Answer 2

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