Are the sum of all forces written correctly for this system?

Join the discussion
Registration is free. Start your own thread to ask a follow-up.
3 replies · 2K views
Blockade
Messages
68
Reaction score
0
Member advised to use the formatting template for questions posted to the homework forums
Can someone check if my Sum of All Forces is setup correctly?

Problem:
7b189141b5.jpg


Diagram:
http://puu.sh/o6pLY/285d7b12c1.jpg

Sum of all Forces:
2e23f577b3.jpg
 
Last edited by a moderator:
Physics news on Phys.org
Blockade said:
Can someone check if my Sum of All Forces is setup correctly?

Problem:
[ IMG]http://puu.sh/o6pGI/7b189141b5.jpg[/PLAIN]

Diagram:
[ IMG]http://puu.sh/o6pLY/285d7b12c1.jpg [/PLAIN]

Sum of all Forces:
2e23f577b3.jpg
You're missing a force in Σ FxB, namely the component of weight in the x direction.
 
Last edited by a moderator:
SammyS said:
You're missing a force in Σ FxB, namely the component of weight in the x direction.

Σ FxB: -mgsin(30 degrees) + T2 - T1 - μkmgcos(30 degrees) = ma

Thank you.

and all ma = 0 since velocity is constant