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Consider a block and trolley system as shown in figure. If the coefficient of kinetic friction between the trolley and the surface is 0.04, the acceleration of the system in ms –2 is: (Consider that the string is massless and unstretchable and the pulley is also massless and frictionless): 20 kg f k 60 N 6 kg

1. 4
2. 3
3. 2
4. 1.2

Correct answer: 2

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