ما يقوله الناس - كتابة مراجعة
لم نعثر على أي مراجعات في الأماكن المعتادة.
applied to move axis body move centre of gravity circle described component constant force cosine cubic foot cubic inch cut the joining Dynamical force earth effect equation equilibrium EXAMPLES expressed falling body feet per second Find the space Find the velocity fixed point force equal force of gravity forces acting forces OA friction hence interval inversely latitude laws of motion Let x denote lever matter contained means miles per hour motion produced moveable inclined plane moveable pulleys multiplied parallel forces parallelogram parallelogram of forces perpendicular plane AC pounds Power and Resistance Power applied pressure produce a velocity Prop proportional quantity of matter radius represent resultant right angles scale-pan screw sine single force specific gravity square Statical force surface sustain tion transporting force triangle unit of weight UNIVERSITY OF DUBLIN velo velocity acquired velocity produced vertical wheel and axle windlass
الصفحة 4 - If a moving point possess simultaneously velocities which are represented in magnitude and direction by the two sides of a parallelogram drawn from a point, they are equivalent to a velocity which is represented in magnitude and direction by the diagonal of the parallelogram passing through the point.
الصفحة 27 - The resultant of two forces acting at right angles is double the lesser of the components ; find the angles it makes with the components. 3. A body is supported on a smooth inclined plane by a force parallel to the plane. Show that the power is to the resistance as the height of the plane is to its length. 4. A uniform bar 4 ft.
الصفحة 48 - Lex I Corpus omne perseverare in statu suo quiescendi vel movendi uniformiter in directum, nisi quatenus illud a viribus impressis cogitur statum suum mutare.
الصفحة 15 - ... the center of mass (§ 79) ; and if the center of mass be at rest it will remain at rest, or if it be moving in any way it will continue moving with constant velocity. The angular velocity produced by the couple must therefore be about some axis through the center of mass. 99. Resultant of any Number of Parallel Forces. To find the resultant of any number of parallel forces, whether in one plane or not, we may find the resultant of two, then combine this resultant with a third and so on. The...
الصفحة 23 - Then the proportion teaches us that the power and weight will be in equilibrium when the power is to the weight as the radius of the axle is to the radius of the wheel.
الصفحة 75 - The force is proportional to the square of the velocity and inversely proportional to the radius of turn during radial acceleration.
الصفحة 25 - A weight of 17 Ibs. just balances a weight of 79 Ibs. on a wheel and axle. What will be the radius of the axle, if that of the wheel be 1 7 inches?
الصفحة 28 - Ibs. into a cart 3 feet high, by means of a plank 14 feet long resting against the cart ? Ans. the force must exceed 206 Ibs.
الصفحة 50 - EXAMPLES. 1. A body moves under the influence of two velocities, at right angles to each other, equal respectively to 17.14 feet and 13.11 feet per second.