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If a spring of spring constant k stretched by a length x under tension T, the energy stored is
Options
(a) 2k/T²
(b) 2T²/k
(c) T²/2k
(d) 2T/k²
Correct Answer:
T²/2k
Explanation:
Energy stored in the spring, U = (1/2).kx²
Since T = kx, .·. U = (1/2) k (T/k)² = T²/2k.
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Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A wire carrying current I has the shape as shown in adjoining figure. Linear parts
- A 70 kg man stands in contact against the inner wall of a hollow cylindrical drum
- Dimensions [ML⁻¹T⁻¹] are related with
- A bar magnet with magnetic moment 2.5×10³ JT⁻¹ is rotating in horizontal plane
- The potential energy of particle in a force field is U = A/r² – b/r, where A and B
Topics: Properties of Bulk Matter (130)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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