|Apr20-12, 05:19 PM||#1|
Rotational dynamics - System in Equilibrium
Hi all, first year MechEng student here, final question of the final assignment of the year, would appreciate any assistance:
1. The problem statement, all variables and given/known data
A 0.150 kg yo-yo has an outer radius R that is 5.60 times greater than the radius r of its axle. The yo-yo is in equilibrium if a mass m is suspended from its outer edge, as shown in the figure .
Find the tension T1
Find the tension T2
Find the mass 'm'
2. Relevant equations
3. The attempt at a solution
Having drawn FBD's for the system, I found no problem in deriving an equation for T1 (if I find this I'm sure I will have no problem with the rest) however it contained variables which when submitted, I was told the answer was not to contain. After much struggling I can't see how it can be done.
|Apr21-12, 02:14 PM||#2|
hi numan-chris! welcome to pf!
show us your full calculations, and then we'll see what went wrong, and we'll know how to help!
|Apr21-12, 02:57 PM||#3|
thank you for the reply, managed to solve the problem myself about 5 minutes ago, was missing a variable from one of the simultaneous equations I needed, novice mistake!
|dynamics, engineering, mechanical, rotational|
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