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Both the blocks as shown in figure are g...

Both the blocks as shown in figure are given together a horizontal velocity towards right. The acceleration of the centre of mass of the system of block is `(m_(A) = 2m_(B) = 2kg)`.

(A)zero (B)`5//3 m//s^(2)` (C)`7//3 m//s^(2)` (D)`2 m//s^(2)`

A

zero

B

`(5)/(3)m//s^(2)`

C

`(7)/(3)m//s^(2)`

D

`2 m//s^(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
Net external foce on the two blocks (whether they move with same retardation or not)
`f_(ext) = (0.2) (2 + 1) xx 10 = 6N`
`:. a_(cm) = (f_(ext))/(2 + 1) = 2 m//s^(2)`
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