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ksaimouli Group TitleBest ResponseYou've already chosen the best response.0
dw:1358006505942:dw
 one year ago

ksaimouli Group TitleBest ResponseYou've already chosen the best response.0
can u draw components indicate +and 
 one year ago

ksaimouli Group TitleBest ResponseYou've already chosen the best response.0
@mathmate
 one year ago

mathmate Group TitleBest ResponseYou've already chosen the best response.1
Have you learned about FBD?
 one year ago

ksaimouli Group TitleBest ResponseYou've already chosen the best response.0
i am always getting TMg cos 60 =Ma
 one year ago

ksaimouli Group TitleBest ResponseYou've already chosen the best response.0
what is FBD
 one year ago

mathmate Group TitleBest ResponseYou've already chosen the best response.1
Free body diagram.
 one year ago

mathmate Group TitleBest ResponseYou've already chosen the best response.1
So the next step is to isolate the object and put all forces that are applied TO the body.
 one year ago

mathmate Group TitleBest ResponseYou've already chosen the best response.1
Memorizing formulas is dangerous, because sometimes theta can refer to something else.
 one year ago

ksaimouli Group TitleBest ResponseYou've already chosen the best response.0
dw:1358006756106:dw
 one year ago

ksaimouli Group TitleBest ResponseYou've already chosen the best response.0
i did not memorize i drew FBD
 one year ago

ksaimouli Group TitleBest ResponseYou've already chosen the best response.0
something wrong with vectors
 one year ago

mathmate Group TitleBest ResponseYou've already chosen the best response.1
dw:1358006741723:dw Do you have something like this?
 one year ago

ksaimouli Group TitleBest ResponseYou've already chosen the best response.0
^ what i have
 one year ago

mathmate Group TitleBest ResponseYou've already chosen the best response.1
According your your FBD, "TMg cos 60 =Ma" is not correct.
 one year ago

ksaimouli Group TitleBest ResponseYou've already chosen the best response.0
i mean TMg sin 60
 one year ago

mathmate Group TitleBest ResponseYou've already chosen the best response.1
That's good. Can you continue?
 one year ago

ksaimouli Group TitleBest ResponseYou've already chosen the best response.0
yes i can but i am getting acceleration as 
 one year ago

ksaimouli Group TitleBest ResponseYou've already chosen the best response.0
dw:1358007157522:dw
 one year ago

ksaimouli Group TitleBest ResponseYou've already chosen the best response.0
this is other half
 one year ago

ksaimouli Group TitleBest ResponseYou've already chosen the best response.0
T+mg sin 30 =Ma
 one year ago

ksaimouli Group TitleBest ResponseYou've already chosen the best response.0
M is 5kg for both find the acceleration
 one year ago

mathmate Group TitleBest ResponseYou've already chosen the best response.1
dw:1358007244777:dw So you have two unknowns (T and a) and two equations. :)
 one year ago

ksaimouli Group TitleBest ResponseYou've already chosen the best response.0
ok so i got mgsin 30mgsin 60=ma+ma
 one year ago

ksaimouli Group TitleBest ResponseYou've already chosen the best response.0
m=5kg for both i got a=1.830 which is wrong
 one year ago

ksaimouli Group TitleBest ResponseYou've already chosen the best response.0
i must get a=1.830
 one year ago

mathmate Group TitleBest ResponseYou've already chosen the best response.1
Your equation assumed that the masses accelerate DOWN the 30 deg. plane, so a<0 is correct! :)
 one year ago

mathmate Group TitleBest ResponseYou've already chosen the best response.1
It is logical that the masses slide down the 60 deg. plane. So put mg sin(60)T = ma , and Tmg sin(30) = ma This assumes mgsin(60)>T (=> a>0) and T>mg sin(30) , again => a>0
 one year ago

ksaimouli Group TitleBest ResponseYou've already chosen the best response.0
so what ur doing is making accelration + right
 one year ago

mathmate Group TitleBest ResponseYou've already chosen the best response.1
You don't always have to guess the direction right the first time. Make a reasonable guess, using logic, and if it comes out negative, reexamine to see if it is logical, or if you made a mistake. This is how scientiests work: examine the work when there is a surprise.
 one year ago
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