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Physics Unit 4 JUNE 11/6/12
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no the 1st part whn they ask abt find amplitude and frequency i cnt find amplitudeU mean the confirming the h and a?
Thanks1 sec...
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oh! sorry
Just see where the max and min is, count the number of small squares between them and (here 1 small square = 0.02) and so multiply it by 0.02
im nt getting the small squares as 0.02oh! sorry
Just see where the max and min is, count the number of small squares between them and (here 1 small square = 0.02) and so multiply it by 0.02
ya i got it nw and the velocity i got as 0.88 by using v=A x angular velocity bt i didn kno y we didn use the sin rule wth it and btw how 2 use the gradient in ths?
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y not?
10 small boxes (2 big boxes) : 0.2
so 1 small box : x
(Cross-multiply, u will get x as 0.2
)
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even i got it wid dat, i think the sin part will be -1 :Sjust find the gradient as we normally do with any graph at the straight part of the graph
ok how to find the gradient shld we find whn height is lowest?y not?
10 small boxes (2 big boxes) : 0.2
so 1 small box : x
(Cross-multiply, u will get x as 0.2
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nopes find the gradient at the part where the graph is a straight line (any of the parts where it is a straight line, it doesnt matterr where
)like read off two values for h and two for t and divide the diffeence between the values
thanksnopes find the gradient at the part where the graph is a straight line (any of the parts where it is a straight line, it doesnt matterr where
like read off two values for h and two for t and divide the diffeence between the values
ok i jst ned tht ans 4 the paper i send u
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For the Jun 2012 question, whats the value of v? :S
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no problemthanks
can u tell me the value for v? :S m again having an issue for what to use as t :S
ok c ths is a tricky 1 1st u hve 2 find angular velocity by using (a=angular velocity x displacement) bt here u hve 2 divide 70 by 2 cuz its the total distance 4 1 complete oscillation then after finding ths angular velocity u use the formula 4 velocity
the value wil be 0.16ok c ths is a tricky 1 1st u hve 2 find angular velocity by using (a=angular velocity x displacement) bt here u hve 2 divide 70 by 2 cuz its the total distance 4 1 complete oscillation then after finding ths angular velocity u use the formula 4 velocity
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dats wat i did i guess but what is the value for v again?ok c ths is a tricky 1 1st u hve 2 find angular velocity by using (a=angular velocity x displacement) bt here u hve 2 divide 70 by 2 cuz its the total distance 4 1 complete oscillation then after finding ths angular velocity u use the formula 4 velocity
sry i meant 0.18
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*facepalm* i did the same thing but got 0.35 -_________________________________________-
lemme try again
open ur revision guide 2 page 59 and look at the results plus its written tht the max possible value for sin or cos is always 1*facepalm* i did the same thing but got 0.35 -_________________________________________-
lemme try again
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i did take it as 1
the velocity wil be 0.18 ok did u halve the distancei did take it as 1