(i)appreciate the effort,
infact i would have saved a lot of time if some1 had explained when momentum is conserved ... why it is conserved . the relationship between momentum conservation ,centre of mass Newtons thrird law and impulses . also solve a few probelms ab initio for example some...
theres a standard question about the spinning dancer who pulls her hands inward reducing her moment of inertia and increasing her ang. velocity . it seems she had to do some work against the centrifugal force (from momentum and energy equations)
i thought of a simpler example to check if the...
as u go further away from the Earth surface the gravitaional force will continously reduce .so even if u were to ignore the intial extra force applied there would still be an accelleration whose rate would increase the further u went from the earth
integral ,
i had the same doubt zooby had about the frequency being generally high and therefore not giving u enough time to remove ur hand . isn't it more realistic to consider the average over half a cycle (.707 times the maximum) for each direction?
also i didnt quite understand what u...
i think the bend will be very small on an atomic level for the same reasons that whoozum attributed but i doubt whether there will be ossilation if the force is constant . if the force is instantaneous then i guess there will be oscillation since elastic forces(?) caused the deformation of the...
lurch ,
if you consider the gases from the rocket to be light which i suppose they are their masses can be neglected ,then the coordinates of the projectile can be found with some accuracy .
regarding the glass ,suppose the cup broke into 4 pieces 3 of which are at the corners of a square...
nice explanation quasar .. so friction acts linearly .. friction while negotiating the turn can be ignored when the angle is small as the polygon approaches a circle ... also as the turn becomes less the friction opposing linear motion does infact become radially inward (look at the pic and...
heres another conceptual one .
there is a standard yet very elegant problem about a rocket bllowing up mid air and finding the final postions of the parts of the projectile using the principle of centre of mass remaining the same since the forces a re internal when the rocket blows up . now...
hi guys .
i read that friction can be attributed to the centripetal force that causes circular motion . now suppose we consider our circle as a polygon , say an octagon and a bike or car was going along one of the sides of this octagon if i were to negotiate a turn of an angle of 45 degrees...