Two cylinders each with a 60 cm diameter, thatare closed at one end, open at the

Question

Two cylinders each with a 60 cm diameter, thatare closed at one end, open at the other, are joined to form asingle cylinder, then the air inside is removed.
How much force does the atmosphere exert onthe flat end of each cylinder? Suppose one cylinder is bolted to a sturdyceiling. How many 99 kg football players would need to hangfrom the lower cylinder to pull the two cylinders apart?
Two cylinders each with a 60 cm diameter, thatare closed at one end, open at the other, are joined to form asingle cylinder, then the air inside is removed.
How much force does the atmosphere exert onthe flat end of each cylinder? How much force does the atmosphere exert onthe flat end of each cylinder? Suppose one cylinder is bolted to a sturdyceiling. How many 99 kg football players would need to hangfrom the lower cylinder to pull the two cylinders apart?
Suppose one cylinder is bolted to a sturdyceiling. How many 99 kg football players would need to hangfrom the lower cylinder to pull the two cylinders apart?

Explanation / Answer

(a) force = pressure * area = pressure* r2 =   101300 * *0.302=    28642Newtons . (b)   weight of each football player = mg = 99 *9.80 =   970.2 Newtons .     number of football players = 28642 / 970.2 =    29.52 ˜    30     it would take 30 football playershanging from it to pull it apart (29 would not be enough)

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