Four acrobats of mass 75.5 kilogram, 68.0 kilogram, 62.0 kilogram, and 55.0 kilogram form a human tower, with each acrobat standing on the shoulders of another acrobat. The 75.5 kilogram acrobat is at the bottom of the tower.
(a) Obtain the normal force acting on the 75.5 kg acrobat?
_______N
(b) If the area of each of the 75.5 kg acrobat's shoes is 475 cm2, find what average pressure does the column of acrobats exert on floor?
_______Pa
(c) Explain will the pressure is the same if a different acrobat is on the bottom?