Jordan is able to lift a car of mass $2000 k g$ with a force of $1000 N$ using a car jack. Find the mechanical advantage of the car jack. (Given, $g = 10 m s^{- 2}$ )
20

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Solution

The correct option is A 20
Given, $g = 10 m s^{- 2}$
Effort $= 1000 N$
Mass of the car, $m_{c} = 2000 k g$
Load = Weight of the car ( $W_{c}$ ) $= m_{c} \times g$
$= 2000 \times 10$
$= 20000 N$

As we know that,
Mechanical advantage (M.A) = $\frac{L o a d}{E f f o r t}$

$∴$ M.A = $\frac{20000}{1000} = 20$

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