Skip to main content

Menu

Navigation

More options

Style variation

Contact us

Quick Statics Problem (equi. systems)

Thread starter lc99
Start date Apr 28, 2018
Tags

Statics Systems

2 replies · 1K views · last reply May 3, 2018

lc99

Thread starter
Apr 28, 2018

#1

Homework Statement

Diagram of two equivalent force systems: a beam with downward forces F1 and F2 placed 1 m and 3 m from the left end, and a beam with a single downward resultant force FR at distance x from the left end, with answer choices a to e listed.

Homework Equations

The Attempt at a Solution

I am getting 5/2 m as the answer.
(not a choice)

FR = -F1 -3F1 = -4F1
Mo = -F1(1) - 3F1(3) = -10F1
Mo = FRx
x = -10/-4 = 5/2

Discussion

TSny

Science Advisor

Homework Helper

Gold Member

Apr 29, 2018

#2

lc99 said:

FR = -F1 -3F1 = -4F1
Mo = -F1(1) - 3F1(3) = -10F1
Mo = FRx
x = -10/-4 = 5/2

Your answer of 5/2 m looks correct to me.

Dr Dr news

May 3, 2018

#3

Once again the correct answer does not appear in the textbook. Be not discouraged. It happens all the time. Your answer appears to be correct.

Top