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प्रश्न
What is the justification for using the pulley then ?
उत्तर
To raise a load directly upwards is difficult. But with the help of a pulley, the effort can be applied in the downward direction to move the load upwards. One can hang on it to make use of his own weight also in order to apply the effort.
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या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
