Momentum and CollisionHard
Question
A copper wire of length 3m and area of cross -section 1 mm2, passes through an arrangement of two frictionless pulleys, P1 and P2. One end of the wire is rigidly clamped and a mass of 1 kg is hanged from the other end. If the Young′s modulus for copper is 10 × 1010 N/m2, then the elongation in the wire is -
Options
A.0.05 mm
B.0.1 mm
C.0.2 mm
D.0.3 mm
Solution
Tension in wire = mg = 10N
so elongation
= 0.3 mm
so elongation
= 0.3 mmCreate a free account to view solution
View Solution FreeMore Momentum and Collision Questions
Water from a tap emerges vertically downwards with an initinal speed of 1.0 m/s. The cross section area of tap is 10-4m2...A ball falling in a lake of depth 200 m shows 0.1% decrease in its volume at the bottom. What is the bulk modulus of the...There are two thin films, A of liquid and B of polythene, identical in size. They are being pulled with same maximum wei...If there is change of angular momentum from 1J to5J in 5 second. Then the torque is :...A stone is dropped from a height h. It hits the ground with a certain momentum P. If the same stoneis dropped from a hei...