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## Homework Statement

Hint: W = ~S · ~F .

Consider a force ~F with components Fx =28 N, Fy = 57 N, and Fz = 99 N, as illustrated in the figure below. Work is done when a particle moves up the vertical z-axis a distance of 4 m.

[PLAIN]http://img691.imageshack.us/img691/5594/problem4e.jpg [Broken]

What is the angle θ between the body diagonal which represents the force ~F and the front-left edge of the block which represents both the z-component Fz of the vector ~F and the vector ~S the particle traversed?

Answer in units of ◦

## Homework Equations

They give me a hint of W= S *F

but I don't know S or W...

## The Attempt at a Solution

F= 28i + 57 j + 99 k

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