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MEI Mechanics 2- Air resistance

http://www.mei.org.uk/files/papers/m209ju_jk32.pdf
For the paper above I don't get why on Q 2aiA, mechanical energy is conserved- surely there will be some air resistance slowing them down.
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Avatar for Zacken
Zacken
22
Original post by runny4
http://www.mei.org.uk/files/papers/m209ju_jk32.pdf
For the paper above I don't get why on Q 2aiA, mechanical energy is conserved- surely there will be some air resistance slowing them down.


You can safely ignore air resistance as it is negligible in every M2 question unless specified otherwise.

Here, the only work done is against gravity, so mechanical energy is conserved.
Reply 2
Avatar for runny4
runny4
OP
6
Original post by Zacken
You can safely ignore air resistance as it is negligible in every M2 question unless specified otherwise.

Here, the only work done is against gravity, so mechanical energy is conserved.


Thanks :smile:
Reply 3
Avatar for Zacken
Zacken
22
Original post by runny4
Thanks :smile:


No problem. :smile:

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