IIT JEE , AIEEE Forum - Physics , Mechanics

sneha.bagri

A Car runs from east to west and anothe car Bof same mass 4m west to east at d same path along d equator. A presses track wid a force N1 and B presses track wid a force N12.then

1. N1 >N2

2.N2> N1

3.N2= N1

4. none of des..................

plz giv ur xplanations................

dwayne

i think n1=n2!!! but i knw dis would not be answer u have!!!!

ashish_banga

N1 > N2

sneha.bagri

ashish how N1 > N2

varun.tinkle

SEE
DUE TO EARTHS ROTATION THERE WILL BE A CENTRIFUGAL FORC OF MAGNITUDE MW^2R IN THE DIRECTION OF ROTATION OF EARTH
THE RESULTANT FRCE IS UNDER ROOT (MG)^2+(MW^2R)^2 WHEN AN OBJECT IS MOVING IN THE DIRECTION OF EARTHS ROTATION WHICH IS WEST TO EAST
WHEN IT IS MOVING FROM EAST TO WEST THEN THE RESULTANT FORCE IS UNDER ROOT (MG)^2-(MW^2R)^2
THEREFORE N2>N1
PLZ RATE ME IF U FIND ME USEFUL
!!!!!!CHEERS!!!!!!!!

ganesha1991

N = mg

effective weight
mg = root m^2g^2 + m^2w^4R^2cos^2@ + 2mg
( mw^2Rcos@)cos(180-@)
cos@ will be negative for car B
and cos@ will be positive for car A
so
i think
N1 > N2
correct me if wrong

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