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Question

A square threaded screw is used to lift a load W by applying a force F. Efficiency of square threaded screw is expressed as

Options :

  1. The ratio of work done by W per revolution to work done by F per revolution

  2. W/F

  3. F/W

  4. The ratio of work done by F per revolution to work done by W per revolution

Show Answer

Answer :

The ratio of work done by W per revolution to work done by F per revolution

Solution :

Given,

Square threaded screw, efficiency

η = W o r k   d o n e   b y   w   p e r   r e v o l u t i o n W o r k   d o n e   b y   F   p e r   r e v o l u t i o n

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