Asked Jan 1, 2020

Give two reasons why the efficiency of a single movable pulley is not 100%.


Expert Answer

Step 1

Step 1

Efficiency of any machine is not 100%, as when we calculate, we consider the ideal case which is not really valid in the natural circumstances.

Step 2

Step 2

The reason for the efficiency being less than 100% are that it may be due to

  1. The loss of energy due to friction between the moving parts of machine.
  2. There i...

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