Qualification > Math

M1 OCR

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elemis:
Congo ;) Glad you've got the MS now. Yeah. We should have them on FEP.

nid404:
the 4th part...I don't really understand what they're asking for :S

Deadly_king:

--- Quote from: Garfield on October 17, 2010, 07:50:34 am ---the 4th part...I don't really understand what they're asking for :S



--- End quote ---

When A strikes the ground, B continues to rise against gravity until it reaches its maximum point where v = 0. Then B starts to descend due to its weight. String becomes taut again when B reaches the level it started to rise against gravity, i.e at the time when A touched the ground earlier.

In other words, you need to find the time taken the particle B takes to reach its maximum height as from when A strikes the ground. Multiply it by 2 since for the string to become taut again, B covers twice this distance(once upwards and then downwards) and during the same time.

For the required solution you need to add the value you obtain to your answer in part(ii)  :D
Hope it helps :)

If you still cannot do it, let me know ;)

nid404:

--- Quote from: Deadly_king on October 17, 2010, 08:32:35 am ---When A strikes the ground, B continues to rise against gravity until it reaches its maximum point where v = 0. Then B starts to descend due to its weight. String becomes taut again when B reaches the level it started to rise against gravity, i.e at the time when A touched the ground earlier.

In other words, you need to find the time taken the particle B takes to reach its maximum height as from when A strikes the ground. Multiply it by 2 since for the string to become taut again, B covers twice this distance(once upwards and then downwards) and during the same time.

For the required solution you need to add the value you obtain to your answer in part(ii)  :D
Hope it helps :)

If you still cannot do it, let me know ;)

--- End quote ---

Ah I got it :D Thank youu  ;D

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