A helium-filled balloon, whose envelope has a mass of 0.25 kg, is tied to a 2.0-m-long, 0.050-kg string. The balloon is spherical with a radius of 0.40 m. When released, it lifts a length h of the string and then remains in equilibrium, as in Figure P9.86. Determine the value of h. Hint: Only that part of the string above the floor contributes to the load being supported by the balloon.

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Q: A tow truck is pulling a car out of a ditch by means of a steel cable (Y = 2.0 x 1011 N/m2) that is…

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Q: 0 of 10 > O Attempt 2 A 2.9-carat diamond is grown under a high pressure of 58 x 10' N/m2. One carat…

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Q: A tow truck is pulling a car out of a ditch by means of a steel cable that is 9.2 m long and has a…

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Q: In the figure, a lead brick rests horizontally on cylinders A and B. The areas of the top faces of…

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Q: A helium-filled balloon, whose envelope has a mass of 0.25 kg, is tied to a 2.0-m-long, 0.050-kg…

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Q: 6

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Q: While on a camping trip, a man would like to carry water from the lake to his campsite. He fills…

A: length of rod (L) = 1.11 m distance of balance point from the mid point (l) = 0.0655 m

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Mechanical Properties of Solids

There are three types of matter- solid, liquid and gas. Out of them, solids have a rigid shaped and size. The intermolecular forces of attractions in solids are greatest. Mechanical properties are the physical properties of a material which it shows, when it is provided with certain amount of force or load. These properties are to be kept in mind for various purposes. When a force is applied to an object, the object may or may not get deformed depending upon its elastic property. But every time the object develops a restoring force against the force applied. This is commonly known as stress. If the object changes its dimensions due to the force applied it develops strain ( which is the ratio of change in dimension to the original dimension).