
Physics Physics Forum 
 LinkBack  Thread Tools  Display Modes 
July 5th, 2016, 06:52 AM  #1 
Newbie Joined: Oct 2012 Posts: 29 Thanks: 0  Engineering Statics problem, involving a circle and a block
Here's the problem https://gyazo.com/1e1be75d9ec9c5bd0cee1e749f4bf900 Here's the solution https://gyazo.com/07f961510855fc116ef02538a2e90170 My question is: Doesn't the floor have a reaction? Why wasn't that taken into account in the solution? 
July 5th, 2016, 09:08 AM  #2 
Senior Member Joined: Jun 2015 From: England Posts: 915 Thanks: 271 
Yes until the instant of lift, there is a reaction from the floor. But this must disappear as soon as the wheel starts to lift. This is very similar to limiting friction where the static coefficient applies at the instant of slip. Note the wording of the question: "To start the wheel over the step" 
July 5th, 2016, 12:52 PM  #3 
Newbie Joined: Oct 2012 Posts: 29 Thanks: 0 
GOT IT. Thanks a lot.


Tags 
block, circle, engineering, involving, problem, statics 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Maths Problem in control engineering.  cosine  Math  1  July 7th, 2015 09:38 AM 
Tools for comparative statics  Brazen  Calculus  0  January 23rd, 2013 12:25 PM 
Engineering Problem equation solution  Ronan  Applied Math  0  December 24th, 2012 02:19 AM 
Need help in statics  koolbklyn  Applied Math  0  April 27th, 2011 08:26 PM 
Probility and statics (excel)  Aliano  Advanced Statistics  0  March 11th, 2010 04:46 AM 