University Physics with Modern Physics with Mastering Physics (11th Edition)

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

View Full Document Right Arrow Icon
11.72: a) Take torques about the upper corner of the curb. The force F acts at a perpendicular distance h R - and the weight acts at a perpendicular distance ( 29 . 2 2 2 2 h Rh h R R - = - - Setting the torques equal for the minimum necessary force, . 2 2 h R h Rh mg F - - = b) The torque due to gravity is the same, but the force
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: F acts at a perpendicular distance , 2 h R-so the minimum force is hv Rh mg-2 ) ( /2 R–h . c) Less force is required when the force is applied at the top of the wheel....
View Full Document

This document was uploaded on 02/05/2008.

Ask a homework question - tutors are online