Did anybody else think that Centre of Mass question was absurd? It was so... qualitative. I have perspective on what moving the centre of mass down by... what, a quarter of a metre? Does to the initial mass. I just guessed it went from 90kg to 80kg. Probably way too much. I haven't a clue.

Reply 51

AlexM10

Harder than last year do we think??

Reply 52

WuMyster

2

Original post by gambyte

For the 3 marker at the bottom of the page?

The one where it was show the resultant vector is greater than 6ms. I had a long number, 8.xxxxxxx

I think I got 8 something. I definitely didn't get 6.something.

**** I messed this paper up.

Reply 53

M12345689

1

Original post by Polyrogue

Did anybody else think that Centre of Mass question was absurd? It was so... qualitative. I have perspective on what moving the centre of mass down by... what, a quarter of a metre? Does to the initial mass. I just guessed it went from 90kg to 80kg. Probably way too much. I haven't a clue.

Yeah, I assumed distance of the modern one was the 1.5m + an extra 0.2m to ensure he made it over the bar then I said the old method would be the same as the new but + about 0.1m for the difference in height of centre of mass, it was such a stupid question, not sure if that is correct.

Reply 54

gambyte

Original post by WuMyster

The one where it was show the resultant vector is greater than 6ms. I had a long number, 8.xxxxxxx

I think I got 8 something. I definitely didn't get 6.something.

**** I messed this paper up.

What was your method?

Reply 55

kennz

8

Original post by Polyrogue

Did anybody else think that Centre of Mass question was absurd? It was so... qualitative. I have perspective on what moving the centre of mass down by... what, a quarter of a metre? Does to the initial mass. I just guessed it went from 90kg to 80kg. Probably way too much. I haven't a clue.

The mass wont change only the height does i think mine was about 150j

Reply 56

AlexM10

Was that when you had to estimate the jumpers mass

Reply 57

WuMyster

2

Original post by gambyte

What was your method?

Trigonometry.

Posted from TSR Mobile

Reply 58

uk_shahj

1

Original post by WuMyster

The one where it was show the resultant vector is greater than 6ms. I had a long number, 8.xxxxxxx

I think I got 8 something. I definitely didn't get 6.something.

**** I messed this paper up.

I got something like 8.3 aswell, I formed a right angle triangle by putting the vectors tip to tail and then used Pythagoras to find the resultant vector.

I don't know if it was correct but I just wanted to get some working out done on the paper in hope of getting some method marks.

Reply 59

Stefan98

Does anyone know where we might find some sort of unofficial markscheme for this? Also any ideas roughly what mark we'll need to get an A in this paper?

G492 9th June 2016 Discussion - (inc. pre-release)

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