Analytical mechanics for students of physics and engineering (1913)
Dadourian, Haroutune Mugurditch, 1878- · New York, D. Van Nostrand Company · leaf 243
pended body is about the same asthai of a freely falling body. WhenI ^> ma then v = 0. Therefore thevelocity of the falling body changesvery Blowly. 3. A uniform rectangular trapdoor, which is held in a vertical position, isallowed to fall. Supposing the hingesIn be smooth and horizontal, find… … Fig. 113. sin Putting this value of G in the torque equation we gel Zw.^sin*. - Energy Method. — In turningthrough an angle 6 the door acquiresa kinetic energy of . Ztts and losesfrom its potential energy an amountequal tomgh. Therefore the energy(•(liiation gives Iuy = mgh >»g o (1 cos 6). I…
Mechanics, Analytic
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