A machine has a mechanical advantage of $10$ . It used to lift a load of $200 k g f$ . Find the required effort.

$60 k g f$

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$90 k g f$

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$30 k g f$

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$20 k g f$

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Solution

The correct option is D
$20 k g f$

Mechanical advantage = $10$

Load = $200 k g f$

$Mechanical Advantage = \frac{Load}{Effort}$

$Effort = \frac{Load}{Mechanical Advantage} = \frac{200}{10} = 20 k g f$

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