Elements of Mechanics; Forty Lessons for Beginners in Engineering
The book Elements of Mechanics; Forty Lessons for Beginners in Engineering was written by author Mansfield Merriman Here you can read free online of Elements of Mechanics; Forty Lessons for Beginners in Engineering book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Elements of Mechanics; Forty Lessons for Beginners in Engineering a good or bad book?
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i68. In Fig. 74 let W=ioo pounds, P=3o pounds acting at the middle of the height, AB=6 feet and 4C=i8 feet. Is the body stable against rotation? 169. For the last problem find where the resultant of the forces W and P cuts the base AB. 170. A table 3 feet square has its top projecting 3 inches beyond the four legs. If the table weighs 27 pounds, what weight hung from one of the corners will overturn it? 72 Resistance and Work Chap, iv CHAPTER IV RESISTANCE AND WORK Art. 18. Resisting Forces An ...' applied force ' is one exerted upon a body by an exterior force, like muscular effort, gravity, pressure, or pull. Such applied forces may cause the body to move or they may meet with resistance which prevents motion. A ' resisting force ' is one that opposes the applied force and which disappears when the applied force is removed. For example, if a beam is placed upon a support, its weight acts downward and an upward re- sisting force called the ' reaction of the support ' is gener- ated; if a force is applied to slide a body which rests on a table, a resisting force called ' friction ' comes into play; if a wagon is drawn, a force called 'traction resist- ance ' opposes the motion; if a ball is thrown by the hand, a resisting force called ' inertia ' is felt.
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