How much work would it take to push a $9 kg$ weight up a $4 m$ plane that is at an incline of $pi / 12$ ?

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Answer 1 · 2017-04-04T07:28:22

The work is $=91.3J$

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The weight is $=9gN$

$theta=pi/12$

Distance, $d=4m$

The component of the weight parallel to the plane is

$F=Wsintheta=9gsin(pi/12)$

The work done is

$W=F*d=9gsin(pi/12)*4=91.3J$

How much work would it take to push a 9 kg 9 kg weight up a 4 m 4 m plane that is at an incline of pi / 12 pi / 12 ?