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Two blocks of masses 10kg and' 20kg are ...

Two blocks of masses 10kg and' 20kg are conne-cted by a massless spring and are placed on a smooth horizontal surface. A force of 200N is applied on 20 kg mass as shown in the diagram. At the instant, the acceleration of 10kg mass is `12ms^(-2)`, the acceleration of 20kg mass is,

A

`4 ms^(-2)`

B

`12 ms^(-2)`

C

`20 ms^(-2)`

D

`8 ms^(-2)`

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The correct Answer is:
A
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