November 14, 2024, 11:03:58 PM

1,531,348 Posts in 46,734 Topics by 1,523 Members
› View the most recent posts on the forum.


I got a physics problem right

Started by The artist formally known, February 16, 2009, 03:39:37 PM

previous topic - next topic

0 Members and 2 Guests are viewing this topic.

Go Down

The artist formally known

Holy shit I rule.

Physics is pretty thought intensive, everyone in our class seems to be struggling

Veal

Physics was the easiest class I took in my entirety of high-school.

maybe you need a better teacher

[REDACTED]

i'm taking calculus-based physics next year n_n
algebra-based physics is actually harder because you have to derive the formulas without any knowledge of the actual calculus involved in physics
I do not have HIV/AIDS.

ncba93ivyase

The less I understand what I'm doing, the more problems I can unintentionally solve.

Our physics teacher is terrible and will spend a whole class period on a single simple problem and draw it out to be 15 times longer than it needs to be, and then slaps us with homework that's infinitely harder. Only about 2 people ever pay attention, and only one of them knows what to do more than 90% of the time.

we're all lost
Quote from: Veal on February 16, 2009, 03:42:19 PM
Physics was the easiest class I took in my entirety of high-school.

maybe you need a better teacher
reefer is in college

Quote from: ncba93ivyase on June 18, 2014, 07:58:34 PMthis isa great post i will use it in my sig

Daddy


The artist formally known

Quote from: Ethereal on February 16, 2009, 03:44:43 PM
i'm taking calculus-based physics next year n_n
algebra-based physics is actually harder because you have to derive the formulas without any knowledge of the actual calculus involved in physics
Once you take Calculus you'll laugh at the placement of the word derive.

Veal

Quote from: reefer on February 16, 2009, 03:49:54 PM
Once you take Calculus you'll laugh at the placement of the word derive.

He's taken calculus, he used that word on purpose.

The artist formally known

Three blocks are connected on the table. The table is rough and has a coefficient of kinetic friction of 0.300. The objects have masses of 4.00 kg, 1.00 kg and 2.00 kg, as shown, and the pulleys are frictionless.



Quote from: Raekewn on February 16, 2009, 03:48:03 PM
F=MA


Here is the problem I did  >.<

Ʃf1=-m1g+t=m1a
t=m1a+m1g
t=m1(a+g)

Ʃf3=-t2+m3g=m3a
t2=m3g-m3a
t2=m3(g-a)

Ʃf2=-t+t2+fk=m2a
-t+t2+μ(m2g)=m2a
-m1(a+g)+m3(g-a)+μ(m2g)=m2a

a=2.38

So much room for mistakes, I may have typed it in wrong but I got it right.

Veal

i just realized the only reason physics was so easy was because i had the best teacher ever.

since none of that means anything to me anymore.

guff

Quote from: reefer on February 16, 2009, 03:49:54 PM
Once you take Calculus you'll laugh at the placement of the word derive.
uh no not really given that while the noun is derivative, the verb is differentiate  akudood;

Walter


The artist formally known

Quote from: Lozal's Other Best Friend on February 16, 2009, 04:16:41 PM
You sure that's the right answer? baddood;
Yes, I submitted it into an online website that tells me if it's right or wrong.

superclucky

Quote from: reefer on February 16, 2009, 03:59:23 PM
Three blocks are connected on the table. The table is rough and has a coefficient of kinetic friction of 0.300. The objects have masses of 4.00 kg, 1.00 kg and 2.00 kg, as shown, and the pulleys are frictionless.



Here is the problem I did  >.<

Æ©f1=-m1g+t=m1a
t=m1a+m1g
t=m1(a+g)

Æ©f3=-t2+m3g=m3a
t2=m3g-m3a
t2=m3(g-a)

Æ©f2=-t+t2+fk=m2a
-t+t2+μ(m2g)=m2a
-m1(a+g)+m3(g-a)+μ(m2g)=m2a

a=2.38

So much room for mistakes, I may have typed it in wrong but I got it right.
we did those type of problems 4 weeks into our physics class

i dropped out yay!
kewns are smelly

The artist formally known

Quote from: Probably Felt on February 16, 2009, 04:20:11 PM
we did those type of problems 4 weeks into our physics class

i dropped out yay!
I'm four weeks into my class too.

Walter

Quote from: reefer on February 16, 2009, 04:19:39 PM
Yes, I submitted it into an online website that tells me if it's right or wrong.


Im confused. You minus the frictional force and the force of the 2 kg block from the force of the 4 kg block? Then divide it by...6? I got 2.77.

baddood;

Go Up