The Elements of the Differential and Integral Calculus: With Numerous Examples

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Macmillan, 1904 - Calculus - 364 pages
 

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Page 350 - If a body is considered to be composed of a number of parts, its moment of inertia about an axis is equal to the sum of the moments of inertia of the...
Page 320 - ... attracts m at the distance r from m: m' J = K~^ . 246. It will be shown later (Art. 253) that the attraction of a homogeneous sphere at any external point is the same as if the mass of the sphere were concentrated at its center. Hence if m...
Page 67 - Assuming that the work of driving a steamer through the water varies as the cube of her speed, show that her most economical rate per hour against a current running с miles per hour is 3c/'2 miles per hour.
Page 67 - The work of propelling a steamer through the water varies as the cube of her speed. Find the most economical speed against a current running 4 miles per hour. Ans. 6 mi. per hr.
Page 308 - The work done by a force acting on a body to displace it is the product of the component of the force in the direction of the displacement and the displacement itself.
Page 65 - ... water varies as the cube of the speed, find the most economical rate of steaming against a current which is running at a given rate. 23. Assuming that the strength of a rectangular beam varies as the product of the breadth and the square of the depth of its cross-section...
Page 66 - Show that the height of the cylinder of maximum volume that can be inscribed in a sphere of radius 10 cm is -*- cm.
Page 66 - The strength of a rectangular beam is proportional to the product of its width and the square of its depth. Find the dimensions of the strongest beam that can be cut from a circular cylindrical log of radius r. 22. The stiffness of a rectangular beam is proportional to the product of its breadth and the cube of its depth. Find the stiffest beam that can be cut from a log of given diameter.
Page 66 - Find the length of the shortest ladder that will reach from the ground to the house when leaning over the wall.
Page 308 - On the CGS system the unit of work is the work done when a force of one dyne is exerted through a distance of one centimetre.

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