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Author Topic: Edexcel PHYSICS Doubts  (Read 134593 times)

Offline Vampire-Love4ever

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Re: Edexcel PHYSICS Doubts
« Reply #345 on: January 05, 2011, 05:31:32 pm »
Quote from: Ari Ben Canaan on January 05, 2011, 05:08:00 am
You have calculated a resultant force of 5600 N for each truck in the first part, right ?

Now truck B exerts a force of 11200 N on A. Thus, A will exert an equal force in the opposite direction.

Since the resultant is 5600 N a force of 16800 N must act to the left. (16800 - 11200 = 5600)

The weight of the truck must act vertically downwards and hence a normal force equal to the weight will act upwards.

Thank you.
If B exerts 11200N on A which summed with the resultant force 5600N = 16800N. Right?
Why is the weight showed as 840000N? =S
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Offline Vampire-Love4ever

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Re: Edexcel PHYSICS Doubts
« Reply #346 on: January 05, 2011, 05:39:57 pm »
Quote from: ~ The Golden Girl  ~ on January 05, 2011, 05:33:46 am
I'll try My best =]

first Drawing is Attached , let me know if you don't get it ;)

as for the second , You calculated the Distance and you got it 1.75 m

Attached as well.

Ohh and the displacement is - 1.27 m

Why : the whole drawing is under the line and hence Nothing Cancels out and so it's -1.27 m


I didnt get how to draw the displacement time graph!! :S
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Offline Vampire-Love4ever

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Re: Edexcel PHYSICS Doubts
« Reply #347 on: January 05, 2011, 05:52:12 pm »
Quote from: ~ The Golden Girl  ~ on January 05, 2011, 05:44:44 am
Attached.

How do we know that it must be drawn like this? :S
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Offline Vampire-Love4ever

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Re: Edexcel PHYSICS Doubts
« Reply #348 on: January 05, 2011, 05:56:33 pm »
Quote from: ~ The Golden Girl  ~ on January 05, 2011, 06:06:51 am
Attached.

Shouldn't it be less steep because it has a smaller young modulus? :S
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Offline Vampire-Love4ever

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Re: Edexcel PHYSICS Doubts
« Reply #349 on: January 05, 2011, 05:58:40 pm »
Quote from: ~ The Golden Girl  ~ on January 05, 2011, 06:03:02 am
There is NOTHING given , Could you Upload the first Part of the Question!

And if you're solving those sheets for materials and mechanics (exam wizard*I'd really appreciate it if you told me the Number *it's takes me a life time to find it*

No, I took them from a solomon user site :S

I am so sorry to waste your time like this :(
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Offline Vampire-Love4ever

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Re: Edexcel PHYSICS Doubts
« Reply #350 on: January 05, 2011, 06:09:16 pm »
Quote from: ~ The Golden Girl  ~ on January 05, 2011, 05:58:34 am
Not sure about the first answer,is the Answer A ?


Attached.

I am not sure about the markscheme. I guessed it as A too. because it has greatest stress.
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Re: Edexcel PHYSICS Doubts
« Reply #351 on: January 05, 2011, 06:51:21 pm »
Quote from: ~ The Golden Girl  ~ on January 05, 2011, 06:03:02 am
There is NOTHING given , Could you Upload the first Part of the Question!

And if you're solving those sheets for materials and mechanics (exam wizard*I'd really appreciate it if you told me the Number *it's takes me a life time to find it*
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Offline The Golden Girl =D

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Re: Edexcel PHYSICS Doubts
« Reply #352 on: January 05, 2011, 06:52:22 pm »
Quote from: Vampire-Love4ever on January 05, 2011, 05:52:12 pm
How do we know that it must be drawn like this? :S

Here you go :

Attached.
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Re: Edexcel PHYSICS Doubts
« Reply #353 on: January 05, 2011, 07:08:06 pm »
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Offline Vampire-Love4ever

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Re: Edexcel PHYSICS Doubts
« Reply #354 on: January 05, 2011, 07:14:35 pm »
Quote from: ~ The Golden Girl  ~ on January 05, 2011, 07:08:06 pm
check this :

https://studentforums.biz/revison-notes/important-graphs-you-must-know-for-physics-edexcel-unit-1-!!!!/

JazakAllah Khair!!!!

THANK YOU SOOOOOOO MUCH!! =D


ps- I am sorry but from my doubts Q108, Q120, Q121 AND Q158 haven't been attempted. Please help me out?
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Re: Edexcel PHYSICS Doubts
« Reply #355 on: January 05, 2011, 07:25:53 pm »
Quote from: ~ The Golden Girl  ~ on January 05, 2011, 05:33:46 am
I'll try My best =]

first Drawing is Attached , let me know if you don't get it ;)

as for the second , You calculated the Distance and you got it 1.75 m

Attached as well.

Ohh and the displacement is - 1.27 m

Why : the whole drawing is under the line and hence Nothing Cancels out and so it's -1.27 m


Attached.

girl - got easy on me , since I will sleep late tonight I'll try my best to be done with them for you =]

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Re: Edexcel PHYSICS Doubts
« Reply #356 on: January 05, 2011, 07:35:24 pm »
for Question 142]ii)

Attached.
« Last Edit: January 05, 2011, 07:49:55 pm by ~ The Golden Girl ~ »
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Re: Edexcel PHYSICS Doubts
« Reply #357 on: January 05, 2011, 07:47:36 pm »
Quote from: ~ The Golden Girl  ~ on January 05, 2011, 06:22:57 am
Attached.

Let me know if you don't get it. *I'm not sure  about this One ,to be honest*

I'm sorry It's COMPLETELY Wrong .

Attached a Picture.
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Re: Edexcel PHYSICS Doubts
« Reply #358 on: January 05, 2011, 07:51:58 pm »
Quote from: Vampire-Love4ever on January 05, 2011, 05:56:33 pm
Shouldn't it be less steep because it has a smaller young modulus? :S

I'll contact someone About the ones I am Not sure of including this one.
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Re: Edexcel PHYSICS Doubts
« Reply #359 on: January 05, 2011, 07:57:21 pm »
Quote from: Vampire-Love4ever on January 04, 2011, 11:35:28 pm
I have many doubts and I am totally relying on this thread.
Please! Please! Help me out if you can!
I am a week away from my exam :'(



Attached.
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