Physics P6 HELP !!

[yinyang]

oct/nov 2005

Q2 a> the voltmeter must be connected across the two resistors in series

from A to the first C

[Q80BOY]

oct/nov 2005

Q2 a> the voltmeter must be connected across the two resistors in series

from A to the first C

Like that ?? (see attachment)

[astarmathsandphysics]

No move the voltmeter to the resistor CD and add another wire for the resistor you have moved.

[yinyang]

no

i have attached the correct one.

[Q80BOY]

no

i have attached the correct one.

Thanks a lot  +rep

[Q80BOY]

Guys really need help in physics p6 I mean im like lost! most of qs dont make sense!
for eg in 2001nov
1b how do you measure that ??
3b dont you place the weights closer to the pivot  moment=force*distance from fulcrum?
but ms says place the 100 g further! huh?
4a(ii) i thought the two precations would be  :
1.use same size beaker
2.use same volume of water
 but ms not even mentions the sencond which i rote and says that sam intial temperature is apoint. HUH !!!! isnt that already mentioned??

i attached my answers to (1b) and (3b) but im not sure if theyr'e right ( can someone please confirm)

"same size beaker" is similar to "same volume of water" according to my physics teacher (i cant explain why  )

[astarmathsandphysics]

1b) The rule should be vertical at the centre where the load is.
3b) The 55.5 g mass should be about 4.5 divisions from the centre.

[hyebyekadal]

hy qboy thanks mans for atleast repnding to my q!! anyway how come the fulcrum q is like that? since its 100g shouldnt it be closer to the fulcrum?? and also they q before how ccan u fin length of drepression from taht?

[Q80BOY]

1b) The rule should be vertical at the centre where the load is.
3b) The 55.5 g mass should be about 4.5 divisions from the centre.

a diagram would be very helpful, or a further explanation 

[Q80BOY]

hy qboy thanks mans for atleast repnding to my q!! anyway how come the fulcrum q is like that? since its 100g shouldnt it be closer to the fulcrum?? and also they q before how ccan u fin length of drepression from taht?

didnt understand ur first question 

length of depression was found by the graph (see attachment) the answer is 28.5 d/mm 

[astarmathsandphysics]

When you measure the depression you measure the vertical displacement from equilibrium. This is done with a vertical ruler in the middle of the rod.

[hyebyekadal]

i was talking about the 3b question. should the 100 g placed closer to fulcrum to balance the fuclrum as
A.C.M=C.M
so 100*x=55.5 * 20
thus x=(55.5*20)/100=11.1 cm
so the 100g must be placed at like 1 division right?

[astarmathsandphysics]

SHOOT ME!!!!!            \N QGHTBV

SHOOT ME AGAIN!!!!!!

You are right I thought the 100g and 55g mass were the other way round.

[sweetsh]

I think that one should look like this

[emi]

so where should the 100g be placed ?