IIT JEE , AIEEE Forum - Physics , Mechanics

srini

Hey,

by the ways nice TOPIC

In waves it is important to note frequency depend only on source

PS:please forgive if it is too silly.dont boink me

pramit

Well I really have good advice

If u really want to success then dont waste ur time in reading these pages

And start doing work for iit

rajat.khanduja

I would like to add a comment on message posted by
nishantsingh89

As he said, when a ball collides with a wall, the linear velocity changes in the opposite direction, while the angular velocity remains in the same direction.

This happens as the normal acts through the centre (of mass). Hence no torque is produced about the com.

Hope u find it useful. Please Rate

bumba

while solving few problems in work,power and energy,it is generally considered that work done by internal forces is always zero.
But that is not the right concept.In some problems, we have to take the work done by internal forces into consideration.Hence,always proceed by havinf a F.B.D in mind else not in paper and then use newton's 2nd law F(net)=Ma

srini

Hey,

Guass law is(can)also be used in gravitational field

shinee

if a man inside a car going with uniform velocity on a horizontal road throws a ball vertically upwards , then the ball after falling , falls directly into the hands of the man
if the car goes with uniform acceleration, it falls behind him
lf the car goes with deceleration, it falls in front of him
if the man projects with some horizontal velocity too along with vertical velocity , and if the car is moving with uniform velocity, then the ball falls infront of them though its horizontal velocity is less than that of the car because its horizontal velocity includes the car's horizontal velocity along with it which is obviously more than the velocity of the car
in the above case, if the car is moving with uniform acceleration, then the position of the ball's landing depends on the velocity of the car at that time of projection
and if the car is moving with deceleration, then the position of the ball would definitely be in front of him.

BALGANESH

a particle which we consider centre of mass , it not the mass located there but it IS the position where the mass is concentrated.

MARK MY WORDS PROPERLY CONCENTRATD AND NOT LOCATED

studyid

hello Friends,
its really good to see all of us discusing the mechanics concepts.

but i have one proposal.

cant we discuss the concepts of maths nd chem also in this thread only ??

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