A closely-coiled helical spring of stiffness k is cut into (n) equal parts. The stiffness in each part of the spring will be - Mechanics

Mechanical Engineering : Mechanics - Strength of Materials - Quiz(MCQ)

A closely-coiled helical spring of stiffness k is cut into (n) equal parts. The stiffness in each part of the spring will be

nkÂ²

nâˆšk

kâˆšn

Correct Answer : Option (A) : nk

Recently Updated in Mechanics - Strength of Materials Questions

The ratio of linear stress to the linear strain is called

bulk modulus

Poisson's ratio

modulus of elasticity

modulus of rigidity

Correct Answer : modulus of elasticity

A riveted joint may fail by

shearing of rivets

tearing of the plate at an edge

tearing of the plate across a row of rivets

any one of the above

Correct Answer : any one of the above

A body is subjected to a direct tensile stress of 300 MPa in one plane accompanied by a simple shear stress of 200 MPa. The minimum normal stress will be

-100 MPa

250 MPa

300 MPa

400 MPa

Correct Answer : -100 MPa

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