1ANS. FOR 2.
ROLLING FRICTION DUE TO ITS NATURE TO OPPOSE RELATIVE MOTION SUPPORTS PURE ROLLING MOTION.THE MAGNITUDE AND DIRECTION OF FRICTION IS SO ADJUSTED THAT THE BODY UNDERGOES PURE ROLLING MOTION.
maine kaha
there r a lot of tough problems on this site
lets give u some \lim_{n\rightarrow infinity}(very)^{n} simple problems on mechanics
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37 Answers
11@mani u shud have asked component about the sheet.the answer to this one was 400 only as i posted in my first one.
1to which u said wrong in #12 as:
@ john
sorry bhai
ur answer is wrong
KEEP TRYIN!!!!!!!!!
1mani paji, it is satisfactory for now that atleast i got till there, can u plz elaborate ur explanation of 1st a bit more???
and wt about my doubt of 2nd Q???
11don't make unclear statements
answer me to #20 if u can
waise thanx 4 regenerating this thread again[3]
3A body in pure rolling motion the friction force experienced by it is not rolling friction.It is the static friction.bcos the pt of the contact is instantaneously at rest.rolling motion and rolling friction doesnt have any connection
rolling friction appears when a rolling body gets deformed.
for example we find it difficult to go in a bicycle with airles tyres.This is becos of rolling friction.
11the matter of fact in 6 is that rolling friction and rolling motion are completely independent
i just wanted to convey the message that children think that rolling friction causes rolling motion.
Te terminology used is just pure convention and has nothing to with their names.
11acc to #20
v is the velocity given at that point . It is a variable;e used to convey that u have to find the answers in terms of v onl
1it is sliding friction that governs rolling.....not rolling friction
21Paragraf type Q :
Para : Force = ma
Q1
if m =2kg; a =10m/s^2
find F.......
[3] [9] [133] [54] [39]
1Okay here is the simplest of them all
-- What is mechanics ? --
just joking ..
11i have asked the question
reply it rather than showing ur ********* intelligence
11Q2
What is the dependence of rolling friction and rolling motion ................(5 marks )
IIT is getting mysterious
so u could expect something like this 2010
explain wat u know
and in detail
12.rolling friction is due to formation of cold welds
but rolling decreases friction since less surface area...
oops, acc to atomic theory, it does not depend on area....
ye to another doubt ho gaya........
1me too in ths condition...but mani paji said that i shud atleast try....the only thing i cud think in the end was this coz .....
11the answer to the 1st question is perfectly incorrect........
and for 2nd one
think before u write
u know it's not correct
@ sci
the only way to learn is to make mistakes
so do a lot of mistakes and also learn 4m them
i am glad that
at least u try
11@ kamal this is a 5 marks question
don't make a joke here
ealaborate more
and i am not able to understand ur feelings
@ john
sorry bhai
ur answer is wrong
KEEP TRYIN!!!!!!!!!