A wire fixed at upper end

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A bob of mass 10 kg is attached to wire 0. Its breaking stress is 4. The area of cross-section of the wire is 10 -6 m 2. The maximum angular velocity with which it can be rotated in a horizontal circle is. A rubber cord 10 m long is suspended vertically. How much does it stretch under its own weight? A brass rod of cross-sectional area 1 cm 2 and length 0.

A wire fixed at upper end

A uniform metallic rod rotates about its perpendicular bisector with constant angular speed. If it is heated uniformly to raise its temperature slightly, A its speed of rotation increases. B its speed of rotation decreases. C its speed of rotation remains same. D its speed in increases because its moment of inertia increases. Boyle's law is applicable for an A adiabatic process. B isothermal process. C isobaric process. D isochoric process. A bimetallic strip is formed by two identical strips, one of copper and the other of brass. Chapter 10 URL copied to clipboard!

This category only includes cookies that ensures basic functionalities and security features of the website. A steel and a brass wire, both having 10 cm length and 0.

A wire fixed at the upper end stretches by length l by applying a force F. What is the work done in stretching? Facebook LinkedIn Pinterest. The elastic potential energy of a body is 1. Work done by the external force against the deforming force. Work done against the external force by the deforming force.

Provided the amplitude is sufficiently great, the human ear can respond to longitudinal waves over a range of frequencies from about How far apart would the dots be in each set? Could you readily measure their separation with a meter stick? On December 26, , a great earthquake occurred off the coast of Sumatra and triggered immense waves tsunami that killed some , people. Satellites observing these waves from space measured km from one wave crest to the next and a period between waves of 1. Does your answer help you understand why the waves caused such devastation? Waves above this frequency can be used to penetrate the body and to produce images by reflecting from surfaces.

A wire fixed at upper end

Conversion Factors :. Example — A wire 2 m long and 2 mm in diameter, when stretched by weight of 8 kg has its length increased by 0. The wire is stretched by 0. A mild steel wire of radius 0. A metal wire 1 m long and of 2 mm diameter is stretched by a load of 40 kg. A brass wire of length 2 m has its one end, fixed to a rigid support and from the other end a 4 kg wt is suspended. If the radius of the wire is 0.

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Another wire, of same material as that of the first one, but of diameter 2 mm, breaks under a tension of : N N N N. Work done by the external force against the deforming force. A bob of mass 10 kg is attached to wire 0. However wire 1 had cross sectional area A and wire 2 has cross sectional area 3A. Have you? Chapter 4 96 Solutions. Was this answer helpful? Scan the QR code to for best learning experience! The greatest Young's modulus of elasticity is possessed by the material of wire. It is further stretched to obtain extension l 1. Its breaking stress is 4. Doc 26 Pages. Can you explain this answer? The correct Answer is: D Work done by constant force in displacing the object by a distance l.

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A uniform metallic rod rotates about its perpendicular bisector with constant angular speed. A telephone switchboard pair cable can be made up with either enameled wire or tinned wire. Work done in stretching done the wire is. View answers on App. How much does it stretch under its own weight? View All Docs. Already Have an Account? View All Tests. Free Exam Preparation at your Fingertips! View more. Sign in Open App. We'll assume you're ok with this, but you can opt-out if you wish. The correct Answer is: D Work done by constant force in displacing the object by a distance l. You also have the option to opt-out of these cookies.