DieselShip's Online Content Library

Q7. A cylinder cover of mass 2.2 tonne is hung from four vertical steel wires of diameter 12 mm. The cylinder cover is being lowered at a steady speed of 0.2 m/s when the brake is suddenly applied, halting the operation. Just before the brake is applied, all four wires have the same length of 32 m.

Calculate EACH of the following:

(a) the static stress in each wire when holding the cylinder cover. (3)

(b) the additional stress imposed on the wires due to the sudden stop. (10)

(c) the maximum extension of the wires due to the sudden stop. (3)

Note:

Modulus of Elasticity for steel wires= 208 GN/m2