GCSE Edexcel physics - 12th June 2014

Watch
This discussion is closed.
huwgerard
Badges: 0
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#1
Report Thread starter 7 years ago
#1
What did everyone think of the paper? I wasn't sure about the ice rink question or the 14000N rope question when the car has a weight of 12000N ( can't remember the exact numbers)
Thanks
0
TheSweatyNerd
Badges: 0
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#2
Report 7 years ago
#2
Easiest paper I have done in my life, I will get 100% raw marks, as per usual.
0
Eradicating
Badges: 0
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#3
Report 7 years ago
#3
(Original post by TheSweatyNerd)
Easiest paper I have done in my life, I will get 100% raw marks, as per usual.
Ikr! What did you get for current? Calculation. .

Posted from TSR Mobile
0
Eradicating
Badges: 0
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#4
Report 7 years ago
#4
(Original post by huwgerard)
What did everyone think of the paper? I wasn't sure about the ice rink question or the 14000N rope question when the car has a weight of 12000N ( can't remember the exact numbers)
Thanks
The rope has 12000N

Whilst the car has 14000N.

Posted from TSR Mobile
0
jhjamie
Badges: 3
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#5
Report 7 years ago
#5
For the car and rope one I said it wouldn't snap because weight is a vertical force, the only thing which would affect the tension of the rope would be a horizontal force like the drag of the car.
0
TheSweatyNerd
Badges: 0
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#6
Report 7 years ago
#6
(Original post by Eradicating)
Ikr! What did you get for current? Calculation. .

Posted from TSR Mobile
5.83 or 7.83 I think.
0
Eradicating
Badges: 0
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#7
Report 7 years ago
#7
(Original post by jhjamie)
For the car and rope one I said it wouldn't snap because weight is a vertical force, the only thing which would affect the tension of the rope would be a horizontal force like the drag of the car.
I wrote it will snap because as the velocity is constant, the car is pulling the truck back by its drag by 14000N. Thus the truck will have exert a equal but opposite force and thus the truck will have 14000N to opposite direction. The rope will break as tension is applied because it has a force of 12000N.
0
Eradicating
Badges: 0
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#8
Report 7 years ago
#8
(Original post by TheSweatyNerd)
5.83 or 7.83 I think.
It wad 7.7.... round it up to 7 8

Posted from TSR Mobile
0
jhjamie
Badges: 3
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#9
Report 7 years ago
#9
(Original post by Eradicating)
I wrote it will snap because as the velocity is constant, the car is pushing the truck back by its drag by 14000N. Thus the truck will have exert a equal but opposite force (<--) thus will be 14000N. This will mean that tension will applied to the rope and will split as it has less force then both the directions of the car (drag) and truck.


Dunno I guessed that one.

Posted from TSR Mobile
I'm not sure, I asked my teacher about it and told him my answer and he said I was correct? I could be wrong though.
0
TheSweatyNerd
Badges: 0
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#10
Report 7 years ago
#10
(Original post by Eradicating)
It wad 7.7.... round it up to 7 8

Posted from TSR Mobile
Yeh 7.8
0
jhjamie
Badges: 3
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#11
Report 7 years ago
#11
If the velocity is constant and all forces are in balance then surely the rope can't snap? It will only snap if there's a resultant force, no?
0
Akashi
Badges: 5
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#12
Report 7 years ago
#12
The rope will not snap. It will be able to tow the car. I had a 5.83 answer somewhere.
0
Eradicating
Badges: 0
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#13
Report 7 years ago
#13
(Original post by Akashi)
The rope will not snap. It will be able to tow the car. I had a 5.83 answer somewhere.
5.8? For what. .

It was 7.8


Posted from TSR Mobile
0
Akashi
Badges: 5
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#14
Report 7 years ago
#14
(Original post by Eradicating)
5.8? For what. .

It was 7.8


Posted from TSR Mobile
I can't remember if the question was how long did it take for the acceleration to take. It was something like 20-13/something. What was the current question?
0
Eradicating
Badges: 0
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#15
Report 7 years ago
#15
(Original post by Akashi)
I can't remember if the question was how long did it take for the acceleration to take. It was something like 20-13/something. What was the current question?
It was rearranging the acceleration formula

T= 20-13 × (... I forgot.



Current =power/voltage

It was 7.8
Posted from TSR Mobile
0
Akashi
Badges: 5
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#16
Report 7 years ago
#16
20-13/T = 1.2 right?
0
Eradicating
Badges: 0
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#17
Report 7 years ago
#17
(Original post by Akashi)
20-13/T = 1.2 right?
you had to find time.

Posted from TSR Mobile
0
Akashi
Badges: 5
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#18
Report 7 years ago
#18
(Original post by Eradicating)
you had to find time.

Posted from TSR Mobile

Yep. 1.2 = 20-13/T so 1.2 x t = 20-13. 20-13/1.2 = T. T = 5.83
0
Eradicating
Badges: 0
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#19
Report 7 years ago
#19
(Original post by Akashi)
Yep. 1.2 = 20-13/T so 1.2 x t = 20-13. 20-13/1.2 = T. T = 5.83
I don't remember doing that or getting that answer.

Most people rearranged the acceleration formula (v-u/t) to make t the object.

T= v-u × A

Posted from TSR Mobile
0
Akashi
Badges: 5
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#20
Report 7 years ago
#20
(Original post by Eradicating)
I don't remember doing that or getting that answer.

Most people rearranged the acceleration formula (v-u/t) to make t the object.

T= v-u × A

Posted from TSR Mobile

A = v-u/T. You can't just do A x v-u because v-u isn't dividing - it is being divided. Therefore, its reciprocal is not to just multiply it out.
The numbers were 1.2 = 20-13/T. Using your method T would = 8.4. Insert it into the first equation (A = v-u/t). 1.2=7/8.4. It doesn't work.
0
X
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

How would you describe the quality of the digital skills you're taught at school?

Excellent (3)
7.5%
Okay (16)
40%
A bit lacking (11)
27.5%
Not good at all (10)
25%

Watched Threads

View All