Momentum and CollisionHard
Question
Two rods of different materials having coefficents of thhermal expansion α1, α2 and Young′s moduli Y1, Y2 respectively are fixed between two rigid massive walls. The rods are heated such that they undergo the same increase in temperature. There is no bending of the rods. If α1, α2 = 2 : 3, the thermal stresses developed in the two rods are equal provided Y1 : Y2 is equal to
Options
A.2 : 3
B.1 : 1
C.3 : 2
D.4 : 9
Solution
Thermal stress σ = Y α ᐃθ
Given, σ1 = σ2
∴ y1α1 ᐃθ = Y2α2ᐃθ or
Create a free account to view solution
View Solution FreeMore Momentum and Collision Questions
A ball hits floor and rebounds after an inelastic collision is the same as that just before the collision...The block of mass M moving on the frictionless horizontal surface collides with a spring of spring constant K and compre...A wheel has angular acceleration of 3.0 rad/s. In a time of 2 s it has rotated through an angle (in radian)of...A thin liquid film formed between a U-shapedwire and a light slider supports a weight of1.5 × 10-2 N (see figure). The l...Two masses A and Of mass M and 2M respectively are connected by a compressed ideal spring. The system is placed on a hor...