How was it?

[dirty_commie]

what did you guys get for the spring question, with the total energy lost

I got 4J, it should have been 0 I think, but I couldnt show the working out to prove it.

I'm guessing that was the one where the spring was held and then released? I got 0, because the GPE was converted so SPE, I'm guessing that was right, I hope.

[kenhung123]

i got 0J but i didnt explain it properly had like 5 minutes. i just said energy is conserved

How'd you calculate 0? Or you just wrote 0 assuming its conserved?

[fdsfsgdfgdf]

1 got 1J of energy lost.
and a spring constant of 50 but it think i did it wrong.

For spring constant q i did F=kx whereas a friend of mine was certain you were meant to find the change in energy or something?

What about banked angle anyone get 5.7degrees?

i used Us=1/2 kx2, and i got 5.7 degrees dunno why

[sasha]

i got 4j aswell.
was fairly decent, finished in time, made a few mistakes i know i shouldnt have. i literally walked out of the exam facepalming myself hoping for B-A

[kenhung123]

1 got 1J of energy lost.
and a spring constant of 50 but it think i did it wrong.

For spring constant q i did F=kx whereas a friend of mine was certain you were meant to find the change in energy or something?

What about banked angle anyone get 5.7degrees?

Yea I got 5.7 using theta=tani^-1(v^/rg) (derived formula)

[fdsfsgdfgdf]

i got 0J but i didnt explain it properly had like 5 minutes. i just said energy is conserved

How'd you calculate 0? Or you just wrote 0 assuming its conserved?

i calculated GPE and spring , since GPE is lost it is negative so Total Energy is zero

[sasha]

yea i got 5.7 aswell, pretty sure that's right

[curious111]

Did anyone else get A, B, B for the three graphs. Not sure about this one

[fdsfsgdfgdf]

Did anyone else get A, B, B for the three graphs. Not sure about this one

i got A, the straight line, and  straight line, since momentum is conserved in elastic and inelastic

[sasha]

Did anyone else get A, B, B for the three graphs. Not sure about this one

pretty sure it was A B C

[Greggler]

yeah just derived that bad boy.

apart from the spring q on motion though. i think i went alright. Only other concern are explain questions in electronics. they always confuse the hell out of me.

structures was the easiest i have ever seen lol. no angles or anything lol

[kenhung123]

Nah I reckon the graph is A B C
First is one that goes down then up to same level
Second stays same
Third goes down and back to lower level

[dirty_commie]

Did anyone else get A, B, B for the three graphs. Not sure about this one

Yep, sure did.

[sasha]

Did anyone else get A, B, B for the three graphs. Not sure about this one

i got A, the straight line, and  straight line, since momentum is conserved in elastic and inelastic

thrid one was asking if it was inelastic, i got C

[Greggler]

ABB

third w was about momentum.. trickkkyy asssss