physics questions.......can you help me?

[Oliveme]

i have a problem with these questions --------- question 2b (i) and question 10a.
http://www.xtremepapers.me/CIE/Cambridg ... _qp_33.pdf
can some one help me and explain these questions? thanks very much. :friends:

 

[ajmanutd]

2b(i) the no. of clockwise moments = no. of anti-clockwise moments..
W X 0.17=160 X 0.78(since u hav to take d measurement frm d middle of d block)
W=734N..

hope u gt it..

 

[Oliveme]

2b(i) the no. of clockwise moments = no. of anti-clockwise moments..
W X 0.17=160 X 0.78(since u hav to take d measurement frm d middle of d block)
W=734N..

hope u gt it..

yes but how do you get 0.17m and 0.78m?
sorry i'm confused.... :fool: :unknown: :unknown: :%) :%)

 

[ajmanutd]

2b(i) the no. of clockwise moments = no. of anti-clockwise moments..
W X 0.17=160 X 0.78(since u hav to take d measurement frm d middle of d block)
W=734N..

hope u gt it..

yes but how do you get 0.17m and 0.78m?
sorry i'm confused.... :fool: :unknown: :unknown: :%) :%)

d width of d block is 0.060 m so half of dat will be 0.030..
nw u measure d distance between P and d man which is .20-.03=0.17 (since u only measure till d center of d block itll b only 0.030 m )
u do d same wid the other side so itll b .75+.03=.78

hope u gt it...

 

[ajmanutd]

2b(i) the no. of clockwise moments = no. of anti-clockwise moments..
W X 0.17=160 X 0.78(since u hav to take d measurement frm d middle of d block)
W=734N..

hope u gt it..

yes but how do you get 0.17m and 0.78m?
sorry i'm confused.... :fool: :unknown: :unknown: :%) :%)

d width of d block is 0.060 m so half of dat will be 0.030..
nw u measure d distance between P and d man which is .20-.03=0.17 (since u only measure till d center of d block itll b only 0.030 m )
u do d same wid the other side so itll b .75+.03=.78

hope u gt it...

 

[Oliveme]

the other side as in from where to where?
pivot to R and from R to S? :shout:

 

[ajmanutd]

the other side as in from where to where?
pivot to R and from R to S? :shout:

the first side is frm the man to d middle of P..
the other side is frm d middle of P to the arrow (which shows 160N of force downwards)

 

[Oliveme]

thanks very much. iget it now! :Yahoo!: :Yahoo!: :Yahoo!: :Yahoo!: :Bravo: :Bravo: :Bravo: :Bravo:

 

[ajmanutd]

ur welcome..