heedm & helmit fire
thanks for the good explination helmetfire, i do understand what centripital is.
but i think its wrong to say there's a force pulling the blades to the centre (wich would increase with speed) when we need strong hubs to hold them from flying off(as lu said). if the force increased with rpm then the hub would never break.!
just because scientists couldnt work it in properly with there theory, doesnt meen its not right. the blades are held from flying off by the hub and they change direction because the hub is turning them!
if a tractor is trying to pull a stump out of the ground, you could say there's a force acting on the tractor pulling it towards the stump.
a car turning a corner only feels a force into the corner because the tiers are changing the direction the car is going.
you can say that there is an imaginary force pulling the car to the inside of the corner, but theres not!
i do agree with centripital being an easy way to understand it, but thats all.
