Laws of motion

  • 0_1545663998508_IMG_20181224_203617544~2.jpg
    Please explain how to solve this sum. Please show working.
    Why option 1 cannot be the answer? This is my attempt:

  • @anag
    In my opinion the ans should be friction force on a can be left or right..left when string isnt taut and F2>umg..and right when string taut and system at rest...string not taut gives reason why (1) isn’t necessarily correct
    Option (3) i feel is F1>F2 so even when system is at rest it has a tendency to go towards friction towards right only possible

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