Friction between m and m

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A m = 2.0-kg block sits on a M = 4.0-kg block. There is no friction between m and M. There is no friction between M and the surface below it. If F = 12 N, which blocks move and what is their acceleration?

(1) M moves with a = 3.0 m/s2

(2) m and M move with a = 2.0 m/s2

(3) m moves with a = 6.0 m/s2

(4) M moves with a = 2.0 m/s2

(5) None of these.

Reference no: EM131161753

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