Qualification > Math

Mechanics Paper 42 Solutions

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[Spy]:
yeah i did it wrong because i forgot to remove tension! GOD!! :S

but yeah k was something like that =D

vserian:
hey for the 3rd question

i got the coefficient as 1.62 but coefficient of friction is not suppose to be more than 1!
i think they made an error with the qustion, i wrote 0.62 insted of 1.62

overall it was a ok paper!

[Spy]:
no its not impossible to have a coefficient more than 1 but its very rare! like for all the years is always less than one and not many meterials on earth have a coefficient more than 1

but it is perfectly fine :) and its 1.62

cashem'up:

--- Quote from: Spy on May 20, 2010, 12:13:01 pm ---no its not impossible to have a coefficient more than 1 but its very rare! like for all the years is always less than one and not many meterials on earth have a coefficient more than 1

but it is perfectly fine :) and its 1.62

--- End quote ---
yea exaclty its like on average practically it might not even be possible bt theoretically....its diferent :P

vserian:

--- Quote from: ima_shah2002 on May 20, 2010, 12:23:10 pm ---yea exaclty its like on average practically it might not even be possible bt theoretically....its diferent :P

--- End quote ---

Well every question i did about coefficients, the answer is below 1 and even theoretically its wrong
all my teaches said it shuld be under 1 and i think CIE did mistake with the paper cause if the tension in the strig is less than the weight then practically it cant move so there wont move so friction is more then the force that agaist the friction and if the cooeffficent of firction is more then 1 then friction will make objects move! thats impossible!

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