Calculate mechanical advantage.

1.5

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2.5

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3.5

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4.5

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Solution

The correct option is B 2.5
Length (l) = 1.75m
Load (L)= 500N
Load arm (LA) = 0.5
Effort arm (EA) = 1.75-0.5 = 1.25
$E \times E A = L \times L A$
$\Rightarrow E \times 1.25 = 500 \times 0.5$
$\Rightarrow E = \frac{250}{1.25} = 200$
Now, $M A = \frac{L}{E} = \frac{500}{200} = 2.5$

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Calculate mechanical advantage.

The correct option is B 2.5Length (l) = 1.75mLoad (L)= 500NLoad arm (LA) = 0.5Effort arm (EA) = 1.75-0.5 = 1.25E×EA=L×LA⇒E×1.25=500×0.5⇒E=2501.25=200Now, MA=LE=500200=2.5

The correct option is B 2.5
Length (l) = 1.75m
Load (L)= 500N
Load arm (LA) = 0.5
Effort arm (EA) = 1.75-0.5 = 1.25
$E \times E A = L \times L A$
$\Rightarrow E \times 1.25 = 500 \times 0.5$
$\Rightarrow E = \frac{250}{1.25} = 200$
Now, $M A = \frac{L}{E} = \frac{500}{200} = 2.5$