A wire suspended vertically from one of its ends is stretched by attaching a 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 (a) 0.2 J (b) 10 J (c) 20 J (d) 0.1 J

Answer: (d). U = 1/2Fl = 1/2 × 200 × 10⁻³ U = 0.1 J So the answer is (d) 0.1 J.

A wire suspended vertically from one of its ends is stretched by… | JEE Main 2003 (AIEEE)

Q16JEE Main 2003 · AIEEEEasy

Elastic Potential Energy

A wire suspended vertically from one of its ends is stretched by attaching a weight of $200\text{ N}$ to the lower end. The weight stretches the wire by $1\text{ mm.}$ Then the elastic energy stored in the wire is

Show answer and solution

Answer: (d)

$U = \dfrac{1}{2}Fl = \dfrac{1}{2} \times 200 \times 10^{-3}$
$U = 0.1\text{ J}$
So the answer is (d) 0.1 J.

Report a mistake

More questions on Elastic Potential Energy

A copper wire of length 3 m is stretched by 3 mm by applying an external force. The…JEE Main 2026 (5 Apr, Shift 2)
A steel wire of length 2 m and Young's modulus 2.0 × 10¹¹ N m⁻² is stretched by a force…JEE Main 2025 (2 Apr, Shift 1)
The amount of elastic potential energy per unit volume (in SI unit) of a steel wire of…NEET 2023
An aluminium rod with Young's modulus Y = 7.0 × 10¹⁰ N/m² undergoes elastic strain of…JEE Main 2023 (8 Apr, Shift 1)
The elastic potential energy stored in a steel wire of length 20 m stretched through 2 cm…JEE Main 2023 (13 Apr, Shift 1)
The elastic behaviour of material for linear stress and linear strain, is shown in the…JEE Main 2022 (26 Jun, Shift 1)
A stone of mass 20 g is projected from a rubber catapult of length 0.1 m and area of…JEE Main 2021 (27 Jul, Shift 1)
A metal rod has length, cross-sectional area and Young's modulus as L, A and Y…MHT CET 2020 (19 Oct, Shift 2)

Elastic Potential Energy question from JEE Main 2003 (AIEEE)

More questions on Elastic Potential Energy