Hooke's Law and Elastic Modulus

IMPORTANT

Hooke's Law and Elastic Modulus: Overview

This topic covers concepts, such as, Hooke's Law, Volume Stress, Relation Among Coefficients of Elasticity & Range of Poisson's Ratio etc.

Important Questions on Hooke's Law and Elastic Modulus

MEDIUM
IMPORTANT

A student performs an experiment to determine the Young’s modulus of a wire, exactly 2 m long, by Searle’s method. In a particular reading, the student measures the extension in the length of the wire to be 0.8 mm with an uncertainty of ±0.05 mm at a load of exactly 1.0 kg. The student also measures the diameter of the wire to be 0.4 mm with an uncertainty of ± 0.01 mm. Take g=9.8 m s2 (exact). The Young’s modulus obtained from the reading is

EASY
IMPORTANT

A steel wire of cross-sectional area 3×10-6 m2 can withstand a maximum strain of 10-3. Young's modulus of steel is 2×1011 N m-2. The maximum mass this wire can hold is,

EASY
IMPORTANT

A copper and a steel wire of same diameter are connected end to end. A deforming force F is applied to this composite wire which causes a total elongation of 1 cm. The two wires will have:

MEDIUM
IMPORTANT

Determine the limit of Poisson’s ratio of a metallic wire.

 

HARD
IMPORTANT

The theoretical limits of Poisson’s ratio lies between -1 t0 0.5
 

HARD
IMPORTANT

Determine the theoritical limit of Poisson's ratio.

EASY
IMPORTANT

Explain the Poissons ratio and mention its limit

EASY
IMPORTANT

What is the range of Poisson ratio for metal?
 

EASY
IMPORTANT

Young's modulus of a material  has the same unit as

EASY
IMPORTANT

The dimensional formula of Young's modulus is MxL-1T-2. The value of x is _____.

HARD
IMPORTANT

A wire of length 8 m has a cross-sectional area of 1 mm2. A load of 10 kg weight is applied to it. If the strain be 1% of 0.1, then calculate the ratio of stress and strain.

HARD
IMPORTANT

A uniform metallic wire is elongated by 0.04 m when subjected to a linear force F. The elongation, if its length and diameter is doubled and subjected to the same force will be________ cm.

MEDIUM
IMPORTANT

What is relation between Y, K, η for some isotropic solid material?

HARD
IMPORTANT

A ball falling in a lake of 200 m shows a decrease of 0.1% in its volume. The compressibility of the material of the ball is -

EASY
IMPORTANT

A lead block of Volume 1 m3 is subjected to a pressure of 10 atmospheres. The compressibility of the lead block is

(Take K=8×109 N m-2, one atmosphere =1.013×105 N m-2)

EASY
IMPORTANT

Which one is the correct relation between modulus of rigidityη and young's modulus γ

EASY
IMPORTANT

Which one is the SI unit of compressibility?

EASY
IMPORTANT

Two litres of water, when subjected to a pressure of 150 N/m2, are compressed by 2 cc. Find the compressibility of water.
 

EASY
IMPORTANT

Which one is the correct relation between modulus of rigidityη and young's modulus γ

MEDIUM
IMPORTANT

Which one of the following is the correct relation between compressibility β and Bulk Modulus K