Qualification > Math
All Mechanics DOUBTS HERE!!!
Fenomenoe9:
ok but why does the time taken for P to rest double?
astarmathsandphysics:
cos it has to travel the same distance with the same acceleration - motion in reverse
cooldude:
--- Quote from: Fenomenoe9 on May 16, 2010, 07:43:56 pm ---ok but why does the time taken for P to rest double?
--- End quote ---
cuz c wen P reaches rest, Q is still incapable of movement as the string is still slack, but then when P goes back down the plane and when it reaches the point where it initially was i.e. 0.51 sec previously, the string becomes taut again and Q rises again, we double the time because we consider both the period when P travels up the plane and back down. P moves down the plane because of its weight, there is no other force acting on P as the tension in the string is non-existent for the duration of the time the string is slack, i.e. the interval of 0.51 sec, hope u get it.
cooldude:
--- Quote from: astarmathsandphysics on May 16, 2010, 07:48:33 pm ---cos it has to travel the same distance with the same acceleration - motion in reverse
--- End quote ---
sorry sir, didnt notice you'd already answered :-[
Fenomenoe9:
haha i love u man thanks alot for helping and yeah i get it man, thanks again! bye
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