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Question
Give reason for the following:
In a single fixed pulley, the velocity ratio is always more than the mechanical advantage.
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Solution
In a single fixed pulley, some effort is wasted in overcoming friction between the strings and the grooves of the pulley; so the effort needed is greater than the load and hence the mechanical advantage is less than the velocity ratio.
RELATED QUESTIONS
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| Meera chose to use a block and tackle system of '9' pulleys instead of a single movable pulley to lift a heavy load. |
Why should she connect more number of pulleys in the upper fixed block?
