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No, they go by more rules than you thinkIt do depends on mood.
If examiner's in a good mood he might show some leniency .
hey what was the answer of q7 last question which asked for distance of particle A from pulley at instantaneous rest.... i got 0.47 m.... wat did you guys get??
wrong,corect anser was 0.47i got.. 1.58 m and was pretty sure that's correct.. as i finfished 15 minutes earlier i sat and recalculated the whole thing... cant remember the full, but the last part i found that:
due to B's motion, A was pulled from rest to the same speed of B, v^2=0^2+2as, so distance = 's'..
Then A travelled a bit more due to subsequent motion( or continuing motion but against gravity until it stopped): 0^2=u^2-2gs (here u of A = final speed of B just before hitting ground,) hence a futher 's' travelled.
total dist= s+s, which came 0.92m by A towards P for me.
A travelled 0.92 m towards P.
and dist from P (2.5-0.92) = 1.58 m... plz share wat others did..
*And wat was the MARKS for this part????
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