RVUNL ME || Machine Design || Quiz 6

A gun is designed in such a manner, that on firing, the barrel recoils against a group of 5 springs of same compliance arrange in parallel. A dashpot, at the recoils end, allows the barrel to come back to its initial position. If Gun barrel has mass 1000 kg and the barrel recoils 1.6m on firing and the initial recoil velocity of the Gun barrel is 30m/s, the spring constant of each individual spring is

A helical spring of constant k is cut into 3 equal pieces and the 3 pieces are then combined in parallel. The equivalent spring constant will be

The deflection of helical spring is directly and inversely proportional respectively to

Where,

D = mean diameter of coil

d = wire diameter