How much work does it take to lift a $58 kg$ weight $4 m$ ?

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Answer 1 · 2018-03-11T18:59:28

The work done here is negative with magnitude $=2320J$

Here the magnitude of work done is directly equal to the product of Weight and the displacement
WD $= 580N xx4m$

$:.$ WD $=2320J$

NOTE : For the sake of simplicity, I took $'g' = (10m )/s^2$

Answer 2 · 2018-03-12T00:36:08

I get $2274 \ "J"$ to the nearest whole number, assuming $g=9.8 \ "m/s"^2$ .

Well, the force here is the weight of the box.

Weight is given by $W=mg$ .

We got: $m=58 \ "kg"$ , $:.W=58*9.8=568.4 \ "N"$

Work is given by the equation: $W=F*d$

We got: $F=568.4 \ "N",d=4 \ "m"$

$:.W=568.4 \ "N"*4 \ "m"=2273.6 \ "J"~~2274 \ "J"$

How much work does it take to lift a 58 kg 58 kg weight 4 m 4 m ?