thank u sir ...to rephrase my question to get a still better explnation (wit regard to myself) ...
>> why is rolling better than sliding ??
thx and regards,
arun
@ ramesh
thanks for ur reply ...ok i agree that the surroundin air gains kinetic energy ...we also know from bernoulli that as velocity increases,pressure decreases.
Now my question is how do we relate this ...in which region is there higher and lower pressure?? and y...
i mean a ceiling fan...by bottom i mean the region below the blades (may be the the entire area where we feel cool air ) and by upper region, i mean the area above the blades...
thx
----bernoulli principle in fan----
when a fan is started, why is there more air flow at the bottom of the fan and not at the upper region of fan...:confused:
>>Also explain if bernoulli principle is involved in this
thx an regards
arun