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Question
If block A is moving with an acceleration of $$5 m{ s }^{ -2 }$$, the acceleration of B w.r.t ground is
A
$$5 m{ s }^{ -2 }$$
B
$$5\sqrt { 2 } m{ s }^{ -2 }$$
C
$$5\sqrt { 5 } m{ s }^{ -2 }$$
D
$$10 m{ s }^{ -2 }$$
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Solution
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Correct option is D. $$10 m{ s }^{ -2 }$$
If block $$A$$ is moving with an acceleration of $$5m/{ s }^{ 2 }$$ acceleration of $$BWrt$$ ground is $$10m/{ s }^{ 2 }$$ as string will be short on both upper and lower side.
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