Pressure = Force/ Area. If the force remains the same, the area will determine the pressure. The smaller the area, the more pressure. For example, the reason why laying on a bed of nails is safer than laying on just one. Since the area of the needles has been spread out evenly the pressure would also be spread out evenly too. If there was only one needle, then all the pressure of your body will be in that one point. This is pretty much the reason why bullets are really small. This holds true for wind turbine blades. The big blades didn’t turn as fast because the the pressure of the air blowing on the blades wasn’t as much as the smaller blades. Most of the time that means that the wind turbine with smaller blades produces more energy than those with bigger blades, meaning that the bigger the area, the less the pressure.-Karlee
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