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acceleration algebraic sum angular velocity astronomical unit attraction axle centre of mass coefficient of kinetic curve or surface D'Alembert's principle deflecting force direction of motion disk displacement distance due to rotation earth ellipsoid equal equation external forces Find force F forces acting ft.-lbs ft.-per-sec ft.-poundals Hence impact impressed forces impulse inches inertia with reference initial velocity Kinematics kinetic energy kinetic friction kinetic sliding friction moment of inertia normal reaction parallel particle of mass path positive potential energy poundals pounds preceding example pressure principal axis principle product of inertia pulley radius of curvature radius of gyration resistance revolutions per minute right angles speed spontaneous axis Statics string tangential component tangential force tension tion uniform force unit mass unit of mass vertical weight zero
Сторінка 36 - Every body continues in its state of rest or of uniform motion in a straight line, except in so far as it is compelled by force to change that state.
Сторінка 36 - To every action there is always an equal and contrary reaction ; or the mutual actions of two bodies are always equal and oppositely directed.
Сторінка 54 - Show what is the smallest force that can be employed to turn the wheel. Upon what general principle is your answer founded?
Сторінка 103 - A curve drawn in the field such that its tangent at every point is in the direction of the resultant force at that point is called a line of force. We can draw such a line through every point of space, and if we suspend at any point a small conducting needle, it is obvious, from what we have already laid down about induction, that it will...