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 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. The sum of work done by the external force and the deforming force. Which one option is true? Two wires have the same material and have the same volume. However wire 1 had cross sectional area A and wire 2 has cross sectional area 3A. The force F is so adjusted that the wire is only slowly stretched. A telephone switchboard pair cable can be made up with either enameled wire or tinned wire. There will be soldered connections. The cost of soldering a connection on the enameled wire will be P 1. A pair cable made up with enameled wire cost P 0.

Necessary Necessary. The Young's modulus of a wire is numerically equal to the stress which will not change the length of the wire double the length of the wire increase the length change the radius of the wire to half. Was this answer helpful?

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.

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?

A wire fixed at upper end

Use app Login. A perfectly elastic uniform string is suspended vertically with its upper end fixed to the ceiling and the lower end loaded with the weight. If a transverse wave is imparted to the lower end of the string, the pulse will: travel upwards with decreasing speed travelled upwards with constant acceleration travel upwards with increasing speed not travel along the length of the string. Open in App. Verified by Toppr. Consider the coordinate system as given in the image. Velocity is increasing as x increases, i. Similar Questions.

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The wire C is stretched most and remains stretched even when stretching force is removed. View answer. Select a course to view your unattempted tests. The wire B is stretched more than A and also comes back to its original length when the stretching force is removed. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. The maximum angular velocity with which it can be rotated in a horizontal circle is. If C alone can complete the work in 7 days, in how many days can A, B and C together complete the work? Enter OTP. Close Privacy Overview This website uses cookies to improve your experience while you navigate through the website. Information about A wire fixed at the upper end, stretches by length l by applying a force F.

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Test Series. A wire is stretched 1 mm by a force of 1 kN. Submit feedback. View Solution. View answers on App. A wire fixed at the upper end stretches by length l by applying a force F. If the Young's modulus of steel is twice as much as that of brass, what will be the ratio of the extension of steel to the extension of brass? If it is heated uniformly to raise its temperature slightly, A its speed of rotation increases. Continue with Google Download the App. Scan the QR code to for best learning experience! Chapter 19 Solutions.