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well how wud i know its there... i only saw this post today cos it came up on the homepage recently answered questions

a one-of-a-kind super book !

no!!! when a single string is involved ( which is massless and inextensible) then all bodies connected to it will move with the same rate

exactly.. u can only get answers by analysis after that :) ..

@karthik2007
let L1 = (sinx)1/x.
LogL1 = log(sinx)/x. Log(0) = -infinity. --> i didnt get this step ! where did log 0 come from?

+3 ... above answers r correct :)

first time period of pendulum will keep on increasing till it reaches the centre of earth, where g becomes 0 , then due to the box's attained velocity it moves further across the diameter where its time period starts decreasing.. and finally 2 pi root(l/g).. then it will go back again to the centre.. same process keeps on repeating.

let r be the distance of bob from earth's centre and R be radius of earth
while bob is on surface of earth , g will be GM/r^2
while bob is inside earth, g will be GMr/R^3

yaar u should have waited for me lol :) ..oj anyway gud one.. tho i knew about it cos this is a world famous riddle.

ohho..
first 1,2,3,4,5,6, are standing
then
1 up, 2 down , 3 up , 4 down , 5 up , 6 down
then
1 up, 2 down, 3 down, 4 down , 5 up, 6 up,
then
1 up, 2 down, 3 down, 4 up, 5 up, 6 up,
then
1 up, 2 down , 3 down, 4 up, 5 down ,6 up
then
1 up, 2 down , 3 down, 4 up, 5 down ,6 down

now see n-2 ie. 6 - 2 ie. 4 ppl are sitting.
got it?

draw the graph of sinx and see where its value is what.. and for tht value put the required function

sinx varies between -1 to 1
so
while sin x is [-1,0) .. [] will be -1 ....{} will be from 0 to 1
sin x is [0,1) ....[] will be 0 ...{} will be from 0 to 1
when sin x is 1 ...[] will be 1...{} will be from 0 to 1

1 is not included in {}

rate me plz lol :) .. nd tell me if u still havent understood how to make the mod graphs

if u have f(x) and u have to draw graph of mod f(x)
let y = | f(x) |
draw the graph of f(x) ( ex. cos or sin)
then as y will always be positive... ( because it is mod. of something) reflect all parts of graph which are in negative region of y axis onto the positive axis of y ..

here are the graphs of the two functions..
nudge me if you have doubts.

*PLZ RATE*