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M2 Help

8bi here http://store.aqa.org.uk/qual/gce/pdf/AQA-MM2B-W-QP-JUN11.PDF
Here is the MS: http://store.aqa.org.uk/qual/gce/pdf/AQA-MM2B-W-MS-JUN11.PDF
Do they basically just mean find the tension ?

What does "the reaction of the bead on the wire" mean ? Is it the sum of the tension and parallel component of weight or just the tension or what ?
(edited 11 years ago)
Original post by member910132
8bi here http://store.aqa.org.uk/qual/gce/pdf/AQA-MM2B-W-QP-JUN11.PDF

Do they basically just mean find the tension ?


If you're thinking about the bead being attached to the centre via a light rod, rather than being on a wire, then yes.

NOTE: I say rod rather than string since the reaction could be away from the centre if the bead isn't moving fast enough.
Reply 2
Original post by ghostwalker
If you're thinking about the bead being attached to the centre via a light rod, rather than being on a wire, then yes.

NOTE: I say rod rather than string since the reaction could be away from the centre if the bead isn't moving fast enough.


This question completely stumped me and I still don't get it. I can do all the maths fine but I have no idea what they actually mean by the normal from the bead on the wire.

Thnx
(edited 11 years ago)
Original post by member910132
This question completely stumped me and I still don't get it. I can do all the maths fine but I have no idea what they actually mean by the normal from the bead on the wire.

Thnx


Draw a tangent to the circle at the bead, then draw the perpendicular to that tangent. And you now have the normal they are referring to.

Corresponds to the tension/compression in the ficticious rod of my previous post.
Reply 4
1 day revision... would it be possible to get a B?
Reply 5
I dunno,

Can anyone help me with this ?

Edit: Solved

This was posted from The Student Room's iPhone/iPad App
(edited 11 years ago)

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