Question

Two particles of mass m and 2m are connected by a spring. If the particle m has
acceleration 0.4 m/s, the relative acceleration between particles is?
(A) 0.3 m/s2
(B) 0.6 m/s?
(C) 0.8 m/s2
(D) 1.2 m/s2?

Answer 1

Answer:

The correct option is no. (C) 0.8m/s2

Explanation:

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Answer 2

Answer: (B) 0.6 m/s^2

solution

accleration of mass 'm' is 0.4 m/s^2 (given)

force acting on 'm'

= + kx

force acting on '2m'

= -kx

relative accleration= A(m) - A(2m)  

                                =  kx/m - (-kx/2m)

                               

                            2m ------- 0.4m/s2

                             m------  0.2m/s2

        relative acc = 0.2 m/s2 - (-0.4)

                             = 0.6 m/s2