Two masses of 10 kg and 5 kg are suspended from a fixed support as shown in fig. The system ispulled down with a force of 150 N attached to the lower mass. The string attached to the support breaks and the system accelerates downwards, If the downwards force continues to act, what is the acceleration of the system ?

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20 m/s2

10 m/s2

5 m/s2

zero

answer is A.

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Detailed Solution

Total force on the system ={(10+5)×10}+150=300Na=300N15kg=20m/s2.

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