# How much work does it take to lift a 30 kg  weight 3/2 m ?

Jan 29, 2016

$\text{Work} = F \cdot d$, where $F$ is the force required to lift it, and $d$ is how high it is lifted.

#### Explanation:

The force required to lift an object is its weight (the force of gravity)

Weight: ${F}_{g} = m g$

I will use 10 for g, you may be using 9.8 or 9.81 in your class.

${F}_{g} = 30 k g \cdot 10 \frac{N}{k g} = 300 N$

$W = F d$
$W = 300 N \cdot \frac{3}{2} m$
$W = 450 J$