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Find the acceleration of the two blocks The system is initaily at rest the friction coefficient are as in fig 7.138 Given `m_(A) = m_(B) = 10 kg`

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`f_(max) = mu N = 50 N` (available friction)

If move together ,
` a = (50)/(10 + 10) = 2.5 ms^(-2)`
Check friction for B
`f = 10 xx 2.5 = 25`
` 25 N` is required which is less than available friction hence they will move together and `a_(A) = a_(B) = 2.5 ms^(-2)`
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CENGAGE PHYSICS-NEWTON'S LAWS OF MOTION 2-Exercise 7.2
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