This discussion is closed.
elpaw
Badges: 15
Rep:
?
#1
Report Thread starter 17 years ago
#1
this is perhaps the only part of my mechanics course so far that i'm having trouble getting to grips with, the reduced mass of a system. What does it do and what does it mean?
0
Juwel
Badges: 18
Rep:
?
#2
Report 17 years ago
#2
Times must be hard when an Oxford Physics student asks an internet forum of mainly sixth-formers for help on mechanics...
0
elpaw
Badges: 15
Rep:
?
#3
Report Thread starter 17 years ago
#3
(Original post by ZJuwelH)
Times must be hard when an Oxford Physics student asks an internet forum of mainly sixth-formers for help on mechanics...
i know what it is and how to use it, i just havent grasped the concept and what it is
0
ShOcKzZ
Badges: 7
Rep:
?
#4
Report 17 years ago
#4
(Original post by elpaw)
i know what it is .....i just havent grasped the concept and what it is
:confused:
0
pal_sch
Badges: 0
Rep:
?
#5
Report 17 years ago
#5
Try telling us what you know, then someone can fill the holes. If any one on here can.
0
Juwel
Badges: 18
Rep:
?
#6
Report 17 years ago
#6
Do you mean the concept of mass as opposed to weight...
0
elpaw
Badges: 15
Rep:
?
#7
Report Thread starter 17 years ago
#7
the reduced mass mu is m1m2/(m1+m2). it is used in solving 2 body problems (like orbits)
0
chrisbphd
Badges: 2
Rep:
?
#8
Report 17 years ago
#8
You use the reduced mass to model one particle as stationary and the other as moving. For example in the case of the oscillation in a hydrogen chloride molecule, they would both be vibrating as if there was a spring connecting them. Because the mass of the chlorine M is so much larger, this can be modelled as being stationary with another mass mu oscillating on it, where mu is the reduced mass.

Obviously, given the expression for reduced mass, the greater the difference in mass between the atoms, the more accurate using the reduced mass will be.

That's not written very well but I'm in a rush.
0
Nylex
Badges: 10
Rep:
?
#9
Report 17 years ago
#9
(Original post by ZJuwelH)
Do you mean the concept of mass as opposed to weight...
Of course he knows the difference between mass and weight. Don't think so little of him .
0
chrisbphd
Badges: 2
Rep:
?
#10
Report 17 years ago
#10
This ought to help:

Reduced Mass Help
0
elpaw
Badges: 15
Rep:
?
#11
Report Thread starter 17 years ago
#11
(Original post by chrisbphd)
This ought to help:

Reduced Mass Help
hey thanks, thats cleared up some of my worries. next up on the agenda: world peace.
0
Tobias
Badges: 2
Rep:
?
#12
Report 17 years ago
#12
(Original post by chrisbphd)
This ought to help:

Reduced Mass Help

<impressed by the level of help!>
0
X
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

What would make a great online university open day?

Virtual campus tour (66)
19.13%
Virtual accommodation tour (51)
14.78%
Find out about sports clubs, societies and facilities (17)
4.93%
Video content about the local area (3)
0.87%
Webinars with lecturers (11)
3.19%
Taster lectures or seminars (72)
20.87%
Speak to current students studying my course (80)
23.19%
Speak to current students about the uni in general (13)
3.77%
Fun online activities or experiences (12)
3.48%
Connecting with careers services or employers (8)
2.32%
Info about student wellbeing and support services (6)
1.74%
Something else (let us know in the thread!) (6)
1.74%

Watched Threads

View All