The machine as shown has $2$ rods of length $1\, m$ connected by a pivot at the top. The end of one rod is connected to the floor by a stationary pivot and the end of the other rod has a roller that rolls along the floor  in a slot As the roller goes back and forth, a $2\, kg$ weight moves up and down. If the roller is moving towards right at a constant speed, the weight moves up with a

821-926

  • [JEE MAIN 2017]
  • A

    constant speed

  • B

    decreasing speed

  • C

    increasing speed

  • D

    speed which is $\frac{3}{4}\,th$ of that of the roller when the weight is $0.4\, m$ above the ground

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