How much work would it take to push a # 5 kg # weight up a # 7 m # plane that is at an incline of # pi / 4 #?

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Answer 1 · 2017-06-04T19:18:43

THe work is #=242.5J#

The component of the weight perpendicular to the plane does not do work. only the component parallel does.

The mass is #m=5kg#

The distance is #s=7m#

The angle is #theta=1/4pi#

The work is

#W=mgsintheta*s#

#W=5gsin(1/4pi)*7#

#=242.5J#