Mechanics: An Elementary Text-book, Theoretical and Practical, for Colleges and Schools |
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acceleration atmospheric pressure axis balance ball barometer body c.cm centre of gravity coefficient of restitution column component cubic centimetre curve cylinder density direction displacement distance dynes equal equation equilibrium experiment feet per second fluid foot-pounds forces acting forces impressed friction fulcrum given grammes grammes weight Hence horizontal plane hydrometer impact impressed force inches inclined plane kilogramme kinetic energy length lines of action liquid mass measured mechanical advantage mercury metres middle point motion moving P₁ P₂ parallel forces parallelogram particle pendulum perpendicular piston placed position potential energy poundals PROPOSITION pulley ratio represent rest right angles scale-pan Section shew shewn in Fig sides smooth specific gravity square centimetre straight line string suppose surface suspended taking moments tension thrust triangle tube uniform unit upward velocity vertical vessel volume W₁ zero
Popular passages
Page 158 - The joule is the work done when the point of application of a force of one newton is displaced a distance of one metre in the direction of the force...
Page 115 - The rate of change of momentum is proportional to the impressed force, and takes place in the direction of the straight line in which the force acts.
Page 241 - In the system of pulleys in which each pulley hangs by a separate string and all the pulleys are of the same weight, find the acceleration of the weight when there are n pulleys, all the strings being vertical.
Page 72 - ... the sum of the moments of the forces about any point in the plane should be zero.
Page 164 - Draw carefully a system of pulleys in which each pulley hangs by a separate string and the ratio of the power to the weight is 1 to 32.
Page 175 - The total energy of any body or system of bodies is a quantity which can neither be increased nor diminished by any mutual action of such bodies, though it may be transformed into any one of the forms of which energy is susceptible.
Page 49 - To prove that the algebraic sum of the moments of two forces about a point in their plane is equal to the moment of their resultant about that point.
Page 3 - The resultant acceleration will be a measure of the resultant force ; this is found from the individual forces by the same process as that by which the resultant acceleration was obtained from its components. 2. Representation of a Force. A force can conveniently be represented by a straight line ; one end of the line will represent the point of application of the force, the direction of the line...
Page 82 - ... the area of the surface and whose height is the depth of the centre of gravity of the surface.
Page 163 - Find the condition of equilibrium for a system of pulleys in which each pulley hangs in the loop of a separate string, the strings being all parallel and each string attached to the beam. The weights of the pulleys are to be taken into account.