Question

Two masses of 10 kg and 20 kg respectively are connected by a massless spring as shown in fig. A force of 200 N acts on the 20 kg mass. At the instant shown the 10 kg mass has acceleration 12 m/s2 towards right. The acceleration of 20 kg mass at this instant is:-

a) 12 m/s2
b) 4 m/s2
c) 10 m/s2
d) Zero

Answer 1

b) 4m/s2
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