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 #?

1 Answer
Jun 4, 2017

Answer:

THe work is #=242.5J#

Explanation:

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#