A vertical rod PQ of length L is fixed at its top end P and has a flange fixed to the bottom end Q . A weight W is dropped vertically from a height h (< L ) on to the flange. The axial stress in the rod can be reduced by

decreasing the length of the rod

increasing the length of the rod

decreasing the area of cross-section of the rod

increasing the modulus of elasticity of the material

A vertical rod PQ of length L is fixed at its top end P and has a flan

1.	A vertical rod PQ of length L is fixed at its top end P and has a flange fixed to the bottom end Q . A weight W is dropped vertically from a height h (< L ) on to the flange. The axial stress in the rod can be reduced by
A.	increasing the length of the rod
B.	decreasing the length of the rod
C.	decreasing the area of cross-section of the rod
D.	increasing the modulus of elasticity of the material
Answer» B. decreasing the length of the rod

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A vertical rod PQ of length L is fixed at its top end P and has a flange fixed to the bottom end Q . A weight W is dropped vertically from a height h (< L ) on to the flange. The axial stress in the rod can be reduced by

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