A crate is pulled up a rough incline. The pulling force is parallel to the incline. The crate is pulled a distance of 6 . 92 m. The acceleration of gravity is 9 . 8 m / s 2. What is the magnitude of the work is done by the gravitational force? Answer in units of J

1 answer

How far up from earth surface?

6.92 sin theta where theta is the angle up from horizontal

mg opposite to up motion so g does negative work

so - m g sin theta * (6.92)
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