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2 answers:
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The magnitude of the adhesive force allows the top block to remain
attached to the bottom when the blocks and the wire are balanced.
The option that must be true is;
Reason:
The tension exerted by the wire attached to the top block = T
Magnitude of the adhesive =
Weight of the top block =
Weight of the bottom block =
Given that with the exertion of the tension, the two blocks remain at rest, we have;
- T =
+
The adhesive causes the bottom block to remain attached to the top block, we have;
Therefore, the magnitude of the adhesive force adds the bottom weight, to the top, weight, which gives;
The magnitude of the adhesive force = The weight of the bottom block
Therefore;
=
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Time taken by the water balloon to reach the bottom will be given as
here we know that
now by the above formula
now in the same time interval we can say the distance moved by it will be
so it will fall at a distance 15.7 m from its initial position