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The masses of 10 kg and 20 kg respective...

The masses of 10 kg and 20 kg respectively are connected by a massless spring as shown in figure. A force of 200 N acts on the 20 kg mass. At the instant shown, the 10 kg mass has acceleration `12m//sec^(2)` . What is the acceleration of 20 kg mass

A

`12ms^(-2)`

B

`4ms^(-2)`

C

`10ms^(-2)`

D

None of these

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The correct Answer is:
B
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MCGROW HILL PUBLICATION-LAWS OF MOTION, FRICTION AND ARCHIMEDES' PRINCIPLE-HIGHER ORDER THINKING QUESTIONS
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