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The masses of 10 kg and 20 kg, respectiv...

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

A

`12m//s^(2)`

B

`4m//s^(2)`

C

`10m//s^(2)`

D

Zero

Text Solution

Verified by Experts

The correct Answer is:
B

T=10x12=120
`200-T=20arArra=4m//s^(2)`
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