steps to this question

j.r.brown
Posts: 1
Joined: Fri Sep 30, 2011 5:42 am

steps to this question

what are the steps If a 129.3 kg crate is being pulled across a frictionless surface by a rope with a tension of 200. N and an angle of 30.0 to the horizontal, what is the normal force exerted on the crate? and the answer is 1170N

bfollinprm
Posts: 1203
Joined: Sat Nov 07, 2009 11:44 am

Re: steps to this question

1. Find your (high school?) teacher.

2. Admit you didn't pay any attention to his lectures

4. Listen to him this time; or find a classmate who's capable of same and listen to him/her

5. Work out the problem.

OR

2. Go to the chapter discussing Newton's second law

3. Read it, and pay attention to the example that is exactly this question, with different numbers.

4. Understand the steps, and any minor differences your problem might have

5. Do the problem following the example, substituting your numbers for the ones the example uses.

OR

1. Make your parents get you a tutor, and ask him these questions.

quizivex
Posts: 1036
Joined: Tue Jan 09, 2007 6:13 am

Re: steps to this question

Nice post, bfollinprm. Especially this part:
bfollinprm wrote:Read it, and pay attention to the example that is exactly this question, with different numbers.

So true. Every intro textbook has the same problem solved as an illustrative example... Perhaps j.r.brown thought it was a different problem because they used the word "box" instead of "crate" in the chapter, or "chain" instead of "rope".

bfollinprm
Posts: 1203
Joined: Sat Nov 07, 2009 11:44 am

Re: steps to this question

No, he just never bothered to open his textbook.

scasplte2
Posts: 7
Joined: Sat Sep 17, 2011 1:03 pm

Re: steps to this question

wow
Last edited by scasplte2 on Sun Oct 02, 2011 12:52 am, edited 1 time in total.

SSM
Posts: 87
Joined: Mon Nov 01, 2010 10:57 pm

Re: steps to this question

bfollin, I think scasplte's comment was out of line and you're absolutely right on this one, for the record.

grae313
Posts: 2297
Joined: Tue May 29, 2007 8:46 pm

Re: steps to this question

scasplte2 wrote:bfollinprm you are the kind of person that makes this field so pretentious and unbearable sometimes.
Actually, bfollinprm gives up his own time to provide a large amount of excellent and patient advice on these forums. People shouldn't be asking us to help them cheat on their high school physics homework here.

TheBeast
Posts: 114
Joined: Mon Mar 07, 2011 12:06 am

Re: steps to this question

I think that scasplte2's comment seems to indicate that he thought that the original question was with regards to a GRE physics style problem. If that were the case, I can understand bfollinprm's response seeming somewhat harsh.

However, I suspect that the original question was just an attempt to get a homework answer, in which case the response was justified (and entertaining).

WhoaNonstop
Posts: 853
Joined: Mon Sep 21, 2009 1:31 am

Re: steps to this question

bfollinprm wrote:1. Make your parents get you a tutor, and ask him these questions.
I will gladly do any of his problems for \$5 a piece! No shame, gotta feed myself.

-Riley