How will the tensions change if the whole setup starts accelerating in the upward direction?

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Two blocks A and B are tied with strings under water, as shown. The density of A is greater than water whereas that of B is less than water. The tensions in the strings are T1 and T2 respectively.

How will the tensions change if the whole setup starts accelerating in the upward direction?

T1 increases and T2 decreases
T2 increases and T1 decreases
Both increase
Both decrease
posted Mar 3, 2018
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