I figured out the slope for a force vs mass graph but does a slope have units?


by Meganktn
Tags: figured, force, graph, mass, slope, units
Meganktn
Meganktn is offline
#1
Sep15-09, 08:55 PM
P: 4
Need to know how to figure out the units on a slope
ty.
Phys.Org News Partner Science news on Phys.org
SensaBubble: It's a bubble, but not as we know it (w/ video)
The hemihelix: Scientists discover a new shape using rubber bands (w/ video)
Microbes provide insights into evolution of human language
Myriadi
Myriadi is offline
#2
Sep15-09, 09:07 PM
P: 10
Yes the slope has units!

Slope = rise/run

Since you are plotting force against mass, the rise in the graph is the change in force while the run is the change in mass.

Therefore, slope= Force/Mass

I am assuming that you are dealing with the SI system, which means force is measured in Newtons (N) and mass in kilograms (kg).

This means that the units of the slope are N/kg. However a Newton is also equal to one kg*m/s2, so if we divide this by one kg we are left with a slope with units m/s2, which acceleration is measured in!

This makes perfect sense considering that F=m*a. If we divide force by a certain mass we have F/m=(m*a)/m. In other words F/m=a. And since the slope of this graph was calculated by dividing F/m we know that it represents acceleration. That's proof that the unit for the slope is m/s2.
Meganktn
Meganktn is offline
#3
Sep15-09, 09:36 PM
P: 4
TY TY TY I APPRECIATE THIS VERY VERY MUCH! your answer was awesome! i hate sites where ppl just tell the answer and not explain it :) tyy


Register to reply

Related Discussions
Difference between calcultaed slope and slope given on the graph? Introductory Physics Homework 1
What is the slope of a force vs. distance graph? Introductory Physics Homework 2
Slope from the Graph of Difference Quotients Calculus & Beyond Homework 2
slope units Introductory Physics Homework 1
Which is the resistance? 1/Slope or V/I? (in I-V graph) Electrical Engineering 15