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Two masses 10kg and 20 kg respectively a...

Two masses 10kg and 20 kg respectively are connected by a massless springs as shown in figure force of 200N acts on the 20kg mass. At the instant shown in figure the 10kg mass has acceleration of 12 `m//s^(2)` what is the acceleration of 20kg mass?

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If tension in the spring is T then
For 10 kg block T-10xx10=100N
For 20 kg block `200-T=20a rArr 200-100=20arArr a=5m//s^(2)`
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