Processing Math: Done
To print higher-resolution math symbols, click the
Hi-Res Fonts for Printing button on the jsMath control panel.
No jsMath TeX fonts found -- using image fonts instead.
These may be slow and might not print well.
Use the jsMath control panel to get additional information.
jsMath Control PanelHide this Message

jsMath

Solution 5.6c

From Mechanics

Jump to: navigation, search

First the maximum friction must be calculated.

To do this we need the normal reaction force R.

Resolving in the normal direction

R−mgcos20=0R=729.80.94=663 N

Then the maximim friction F is

R=0.2663=132 N

The gravitational force which we denote as G1, down the slope is

G1=mgsin20=729.80.342=241 N

The forces are in equilibrium down the slope. If we denote the air resistance force as F1, we get,

G1−F1−F=0

giving

F1=G1−F=241−132=109 N

Retrieved from "http://wiki.math.se/wikis/2009/bridgecoursemechanics/index.php/Solution_5.6c"