Question

কারা বাধ্য না হলে বই স্পর্শ করে না

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Answer 1

The velocity ratio of a single fixed pulley is always more than 1.(false)

The velocity ratio of a single movable pulley is always 2.(true)

The velocity ratio of a combination of n movable pulleys with a fixed pulley is always 2n.(true)

The velocity ratio of a block and tackle system is always equal to the number of strands of the tackle supporting the load. (true)