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प्रश्न
Why is less effort needed to lift a load over an inclined plane as compared to lifting the load directly?
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उत्तर
Less effort is required because for a given height ‘h’ as longer is the length ‘l’ of the inclined plane, smaller is the angle of inclination, therefore, greater is the mechanical advantage, so lesser will be the effort required. As we know
Mechanical Advantage = l/h.
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