Advertisements
Advertisements
Question
Consider two wires X and Y. The radius of wire X is 3 times the radius of Y. If they are stretched by the same load then the stress on Y is ___________.
Options
equal to that on X
thrice that on X
nine times that on X
Half that on X
Advertisements
Solution
Consider two wires X and Y. The radius of wire X is 3 times the radius of Y. If they are stretched by the same load then the stress on Y is nine times that on X.
APPEARS IN
RELATED QUESTIONS
The Young’s modulus for a perfect rigid body is __________.
Which of the following is not a scalar?
Copper of fixed volume V is drawn into a wire of length l. When this wire is subjected to a constant force F, the extension produced in the wire is ∆l. If Y represents Young’s modulus, then which of the following graphs is a straight line?
Define strain.
Define Poisson’s ratio.
Which one of these is more elastic, steel or rubber? Why?
A spring balance shows wrong readings after using it for a long time. Why?
What is the effect of temperature on elasticity?
Write down the expression for the elastic potential energy of a stretched wire.
A cylinder of length 1.5 m and diameter 4 cm is fixed at one end. A tangential force of 4 × 105 N is applied at the other end. If the rigidity modulus of the cylinder is 6 × 1010 Nm-2 then, calculate the twist produced in the cylinder.
