Properties of matterHard
Question
A wire suspended vertically from one of its ends stretched by attaching weight of 200 N to the lower end. The weight stretches the wire by 1 mm. Then the elastic energy stored in the wire is
Options
A.0.2 J
B.10 J
C.20 J
D.0.1 J
Solution
The elastic potential energy stored in the wire,
U =
× stress × strain × volume
=
× Al = 
Fᐃl = × 200 × 10-3 = 0.1 J
U =
× stress × strain × volume=
× Al = Fᐃl = × 200 × 10-3 = 0.1 JCreate a free account to view solution
View Solution FreeMore Properties of matter Questions
A wire fixed at the upper end stretches by length l by applying a force F. The work done in stretching is...Detol antiseptic lotion is used for nursing cuts and wounds on the body because its surface tension is :-...Two wires $A$ and $B$ made of different materials of length 6.0 cm and 5.4 cm , respectively and area of cross sections ...With increase in temperature, the viscosity of : -...The bulk modulus of a spherical object is 'B'. If it is subjected to uniform pressure 'p', the fractiona...