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Physics-

General

Easy

Question

Lifts A and B of masses $m subscript 1 end subscript$ and $m subscript 2 end subscript$ starts moving from rest with acceleration a in upward and downward directions respectively. Lift B is stopped after time t. If the strings are tight again in the interval of time $t to the power of ´ end exponent$ , then $t to the power of ´ end exponent$ is

$\frac{a^{2} t}{g^{2}}$
$\frac{a t \sqrt{2}}{g}$
$\frac{a t}{g \sqrt{2}}$
$\frac{a t}{g}$

The correct answer is: $fraction numerator a t over denominator g end fraction$

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