ch07-p056 - 56. (a) The force of the worker on the crate is...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
56. (a) The force of the worker on the crate is constant, so the work it does is given by WF d F d F =⋅= G G cos φ , where G F is the force, G d is the displacement of the crate, and is the angle between the force and the displacement. Here F = 210 N, d = 3.0 m, and = 20°. Thus, W F = (210 N) (3.0 m) cos 20° = 590 J. (b) The force of gravity is downward, perpendicular to the displacement of the crate. The
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/19/2010 for the course PHYSICS 191262 taught by Professor Najafzadeh during the Spring '09 term at The Petroleum Institute.

Ask a homework question - tutors are online