HARD
11th West Bengal Board
IMPORTANT
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A uniform rod of length L and density ρ is being pulled along a smooth floor with a horizontal acceleration a. Find the magnitude of the stress at the transverse cross-section through the mid-point of the rod

Important Questions on Elasticity

HARD
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 12 - Elasticity>EXERCISE>Q 16
A steel wire of cross-section A is stretched horizontally between two clamps located at a distance l from each other. A load W is suspended from the mid-point of the wire. What is the vertical distance through which the mid-point of the wire moves down ? Young's modulus of steel is Y.
MEDIUM
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 12 - Elasticity>EXERCISE>Q 1
The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied :
MEDIUM
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 12 - Elasticity>EXERCISE>Q 2
When a metallic wire is stretched by a load, the fractional change in its volume ΔV/V is proportional to
EASY
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 12 - Elasticity>EXERCISE>Q 3
A spring of force constant K is cut into two equal parts. The force constant of each part is
HARD
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 12 - Elasticity>EXERCISE>Q 4
A wire elongates by l mm when a load W is hanged from it. If the wire goes over a pulley and two weights W each are hung at the two ends, the elongation of the wire will be (in mm)
MEDIUM
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 12 - Elasticity>EXERCISE>Q 5
Young's modulus of a material has the same units as
EASY
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 12 - Elasticity>EXERCISE>Q 6
Two wires A and B are of the same material. Their lengths are in the ratio 1:2 and the diameters are in the ratio 2:1. If they are pulled by the same force, then increase in length will be in the ratio of:
MEDIUM
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 12 - Elasticity>EXERCISE>Q 7
A rope 1 cm in diameter breaks if the tension in it exceeds 500 N. The maximum tension that may be given to a similar rope of diameter 2 cm is