Home
Class 11
PHYSICS
A wire 4 m long and 0.3 mm in diameter i...

A wire 4 m long and 0.3 mm in diameter is stretched by a force of 100 N. If extension in the wire is 0.3 mm, then calculate the potential energy stored in the wire.

Text Solution

Verified by Experts

Given `l=4m, Deltal=3xx10^(-4)m,F=100N`
Work done `=` P.E stored `=(1/2)(F)(Deltal)=1/2xx100xx3xx10^(-4)=0.015J`
Promotional Banner

Topper's Solved these Questions

  • MECHANICAL PROPERTIES OF SOLIDS

    SUBHASH PUBLICATION|Exercise THREE MARKS QUESTIONS AND ANSWERS|1 Videos
  • MECHANICAL PROPERTIES OF FLUIDS

    SUBHASH PUBLICATION|Exercise NUMERICALS WITH SOLUTIONS|33 Videos
  • MOTION IN A STRAIGHT LINE

    SUBHASH PUBLICATION|Exercise NUMERICALS WITH SOLUTIONS|28 Videos

Similar Questions

Explore conceptually related problems

A cube of side 0.05 m of a material of conductor is drawn into a wire of thickness 0.20 mm . If the specific resistance of the wire is 10^(-6)Omegam then calculate the resistance of the wire.

A piano wire having a diameter of 0.90 mm is replaced by another wire of the same material but with a diameter of 0.93 mm. If the tension of the wire is kept the same, then the percentage change in the freuency of the fundamental tone is

An electron in the potentiometer wire experiences a force of 2.4 xx 10^-19 N . The length of the potentiometer wire is 4 m. The emf of the battery connected across the wire is :

The plates of a parallel plate capacitor have an area of 100 cm^(2) each and are separated by 3 mm . The capacitor is charged by connecting it to a 400 V supply . Calculate the electrostatic energy stored in the capacitor .

A sphere of radius 3 cm is melted and recast into a wire of diameter 0.2 cm. find the length of the wire.

A brooch is made with silver wire in the form of a circle with diameter 35 mm. The wire is also used in making 5 diameters which divided the circle into 10 equal sectors as shown in Fig. 5.12. Find : the total length of the silver wire required.

A 14.5 kg mass, fastened to the end of a steel wire of unstretched 1.0 m, is whirled in a vertical circle with an angular velocity of 2 rev/s at the bottom of the circle. The cross- sectional area of the wire is 0.065" cm"^(2) . Calculate the elongation of the wire when the mass is at the lowest point of its path.