SHOW HOW A SINGLE PULLEY CAN BE USED TO REDUCE THE EFFORT REQUIRED TO OVERCOME A GIVEN LOAD . DRAW A DIAGRAM OF THE SYSTEM . WHY IS IT GENERALLY MORE CONVENIENT TO USE TWO PULLEYS FORTHIS ? ANME TWO PULLEYS

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Solution

The mechanical advantage of a single pulley can be increased by increased by maximizing the effort distance on the machine. This can also be done by using a larger pulley.
BY using multiple pulleys we are actually increasing the tension due to the load on the string. So, effectively the force applied by us would decrease.

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(M . A .) = 2

Draw a neat labelled diagram showing a pulley being used to lift a load. How are load and effort related in an ideal situation?

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