thank you.. the riddle is half solved for me.. can you give me some more information regarding the external forces in hydrodynamics point of view, that are acting on axisymmetric body which causes rotation about its axis? apart from munk moment.
thank you..
axisymmetric bodies tend to rotate on its own axis while moving which is know as coning. why does it occur ? what are the forces which making it rotate ? what is the reason for this turning moment(coning) ??
your explanation is quite convincing.
but am i wrong if i take the following line as reference..
a screw needs less force than hammering a Nail into a solid block where the resistance is higher than that offered by water!
if not a screw, even in case of nail it will easily penetrate into a...
if we consider water as the fluid instead of air, would the spinning helps in penetrating through the fluid and shows less drag than that of "non-spinning" ?
when a bullet is traveling at great speeds, how will be the frictional and drag forces on the bullet while considering it spinning and then non-spinning.
to my knowledge i feel that spinning bullet shows less drag and friction than non-spinning, as we know that the rolling friction is always...