Block 1 is stacked on top of block 2. Block 2 is connected by a light cord to block 3, which is pulled along a frictionless surface with a force F as shown in the diagram. Block 1 is accelerated at the same rate as block 2 because of the frictional forces between the two blocks. If all three blocks have the same mass m, what is the minimum coefficient of static friction between block 1 and block 2? 4- 3F 2mg 2F mg F 3mg d) O 2F 3mg mg 1) (e)

Q: how about 2 , 3 and 4

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