Solution: How many kN of lead must be fastened to the outside bottom of the cylinder?

A hollow cylinder 1 m in diameter and 2 m high weighs 2825 N. How many kN of lead weighing 110 kN/m^3 must be fastened to the outside bottom of the cylinder to make it float with 1.5 m submerged in water?

How many kN of lead must be fastened to the outside bottom of the cylinder make it float?

Problem Statement: CE Board November 1993

A hollow cylinder 1 m in diameter and 2 m high weighs 2825 N. How many kN of lead weighing 110 kN/m3 must be fastened to the outside bottom of the cylinder to make it float with 1.5 m submerged in water?

  • A. 8.5 kN
  • B. 6.5 kN
  • C. 1.5 kN
  • D. 9.5 kN

Problem Answer:

The total kN of lead that must be fastened is 8.5 kN.

Solution:

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