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the mean kinetic energy of a particle of mass m with constant force in any interval of time will be......whr w1 and w2 are the initial and final velocities

but the answer given is 3g/2sqrt 2 l

a uniform rod of lenght l,hinged at the loswer end is free to rotate in the vertical plane.if the rod is held vertically in the beginning and thn released , the angular accelaration of the rod whn it makes an angle of 45 wid the horizontal is:

rates assured.....

cos x - sin x in the numerator
and so the answer will be
sin x + cos x

rate if useful....

write cos 2x as cos^2x - sinn ^2 x
=thn make factors and u will be left wid

hey this ques was solved a few days be4 also just look for it....
lemme tell u in brief actually the diff of diff in in gp wid common ratio 2....
general term in taht cas is a x r ^n + b x n + c
put n as 1and r as 2 and equate it to 9 similarly
wid n=2 equate it to 16...
and wid again n=3
form 3 eqns get the value of a, b, c
get the general term and thn u can sum it up....
if u hv any doubt u can nudge me...
rate if useful

can anyone tell me abt the concept of backbonding and how it helps in stability of a compound.....rates assured

yep i took it up.........maths was definitely easy bt i found some ques in phy a bit tricky as compared to the other 2

can u plzz post the answer. i have solved the question bt i wanna know if the answer is correct be 4 posting the solution bec its a bit long and no use posting a wrong solution..

hey joy thr was some error in ur answer.....neways thanx for taking out ur time to solve it

yep umang is rite........but do u know wat to do after that.......
ill tell u in case u dunno how to proceed...
c whn diff of diff is in gp thn the general term is of the form
A r^ n + bx n + c
u know r = 2
for 1 st term 2A + b + c = 9
for 2nd
4A + 2b + c=16
for 3rd
8 A+ 3b + 3=29
frm these equations u vcan find a , b ,c
and thn find the sum.....i hope ull be able to solve it....in case u hv any prob ur free to nudge me.........
rate me if it was useful

hey all u genius guys out thr plz plz plz solve this one........and do post the method too

find the locus of the centres of the cirscles passing through the intersection of the circles x^2 + y^ 2 = 1 and x^2 + y^2 - 2x + y=0

i lknow the answer but i need the method to solve such kinds of questions in circles

let a function y = f(x) satisfy the following conditions..

dy = y + _[0]

^{[1] y dx}

^-----

^dx

^{and f(0)= 1}

^{thn a) f '' (0) =}

^{b ) f ( 1) =}

^c)

_{[ x}

_{[ 0] f (x) -1}

_-----------

_x

_{d) 1/2 f ' ( ln ( 3 - e)) = ??}

_{find the values of all the options...........}

_{rates guaranteed}